Add it yourself...
change a cambelt on a Toyota Celica GT4 ST205http://www.gtfours.co.uk/how_to/cambelt/cambelt.htm
How to change your clutch and flywheel (Smaay Way) - NewCelica.org Forumhttp://www.newcelica.org/forums/showthread.php?t=334603
Club4AG Forum Topics: DIY: 4age Valve Stem Seals.http://forums.club4ag.com/zerothread?id=9621
set the ignition timing on a Toyota Celica GT4 ST165 ST185 and ST205http://www.gtfours.co.uk/how_to/timing/timing.htm
Cylinder Head Rebuildhttp://www.tscperformance.com/cylinder_home.html
shorten a Toyota Celica GT4 ST165 throttle cablehttp://www.gtfours.co.uk/how_to/throttle_cable/165/throttle.htm
Modiying 3SG enginehttp://www.roadandtrack.net.au/images/stories/documents/Modifying_the_3SG_non-turbo_engine.pdf
How to remove engine from car (Smaay way) - NewCelica.org Forumhttp://www.newcelica.org/forums/showthread.php?t=324615
shorten a Toyota Celica GT4 ST205 throttle cablehttp://www.gtfours.co.uk/how_to/throttle_cable/205/throttle.htm
more . . .
How to Install Aftermarket Gaugeshttp://www.toyotacelicaonline.com/guages.htm
Tune Up My Car or Truck Information Car Repairhttp://www.2carpros.com/how_to/how_to_tune_up.htm
Change Motor Oil and Oil Filter Auto Repair Information Car Repair Informationhttp://www.2carpros.com/how_to/how_to_change_oil_filter.htm
The Engine Oil Biblehttp://www.carbibles.com/engineoil_bible.html
Synthetic or Mineral Oil - Car Maintenance - DIY - Oil Change - Motor Oilhttp://www.popularmechanics.com/automotive/how_to/4232672.html
Oil Viscosity misconceptionshttp://www.imoc.co.uk/forums/kb.php?mode=article&k=65
The benefits of synthetic oil and why.....http://www.imoc.co.uk/forums/kb.php?mode=article&k=72
Seafoam Infohttp://www.clublexus.com/forums/showthread.php?t=155469
Air Flow Meter Adjustmenthttp://www.celica-gts.com/resources/how-to/afm_adjustment.html
test the Air Flow Meter on a GT4 ST165http://www.gtfours.co.uk/how_to/test_afm/afm.htm
remove and port TVIS (Variable Induction System) on a Toyota Celica GT4 ST165http://www.gtfours.co.uk/how_to/tvis/tvis.htm
test the Throttle Position Sensor on a GT4 ST165http://www.gtfours.co.uk/how_to/test_tps/tps.htm
Zex Nos Kit Installationhttp://www.toyotacelicaonline.com/nos1.htm
Supra Intakehttp://www.tscperformance.com/supra_intake.html
Resetting your Air/Fuel Mixture Ratiohttp://www.6gc.net/howto/reset_your_air_fuel_ratio
DIY Intakehttp://www.toyotacelicaonline.com/intake1.htm
fit an intake air temperature monitor to a Toyota Celixa GT4http://www.gtfours.co.uk/how_to/temp_monitor/temp_monitor.htm
Determining Check Engine Light Codeshttp://www.6gc.net/howto/determine_check_engine_light_codes
DIY: 4AGE distributor rebuildhttp://forums.club4ag.com/zerothread?id=8286
5S-FE/3SGTE/4AFE Distributor Rebuildhttp://www.celicatech.com/forums/showthread.php?t=12755
Supra Ignitionhttp://www.tscperformance.com/supra_ignition.html
Apex'i S-AFC Installationhttp://www.toyotacelicaonline.com/celica1/safc.htm
How to Advance Your Ignition Timinghttp://www.toyotacelicaonline.com/timing.htm
How to Replace Your Diesel Glow Plugshttp://autorepair.about.com/od/enginerelateddiyjobs/l/aa081404a.htm
OBD Codes for 1996-2003 Carshttp://autorepair.about.com/od/obdcodedatabase/a/OBD_1996_year.htm
Change the radiatoron on a Toyota Celica GT4http://www.gtfours.co.uk/how_to/radiator/radiator.htm
Supra Fanshttp://www.tscperformance.com/supra_fans.html
Thermostat Replacement - How to Replace Your Car Thermostat byhttp://www.automedia.com/Keep_Your_Eye_on_the_Thermostat/ccr20041201th/1
Fan Clutch Upgrade - Perfect for Crawling - TTORA Forumhttp://ttora.com/forum/showthread.php?p=2373491
Choosing The Right Coolanthttp://www.popularmechanics.com/how_to_central/automotive/1272436.html
Replace a Radiatorhttp://www.2carpros.com/how_to/how_to_replace_radiator.htm
Saturday Mechanic - Fan Clutch Replacementhttp://www.popularmechanics.com/how_to_central/automotive/1772922.html
Frequently Asked Cooling Questions From Radiator.comhttp://www.4x4wire.com/marketing/radiator_com/
remove and refit the Fuel Rail on a Toyota Celica GT4 ST165http://www.gtfours.co.uk/how_to/fuel_rail/165/fuel_rail.htm
Supra Fuel Linehttp://www.tscperformance.com/supra_fuelfeed.html
Toyota Celica GT4 ST165 fuel pump relay modificationhttp://www.gtfours.co.uk/how_to/fpr/fpr.htm
Supra Fuel Pressurehttp://www.tscperformance.com/supra_fuel.html
make and fit a Fuel Cut Defencer FCD on a GT4 ST165 and ST185http://www.gtfours.co.uk/how_to/fcd/fcd.htm
Supra Air Fuelhttp://www.tscperformance.com/supra_airfuel.html
Relocate Fuel Filterhttp://www.celica-gts.com/resources/how-to/fuel_filter.html
fit Water Injection on a Toyota Celica GT4 ST165http://www.gtfours.co.uk/how_to/wi/wi.htm
Change a Fuel Filterhttp://www.2carpros.com/how_to/how_to_change_fuel_filter.htm
install a cheap catch can into a Toyota Celica GT4 ST165 and ST185http://www.gtfours.co.uk/how_to/catch_can/catch_can.htm
Vacuum Diagram of Japan Cars Toyota, MMC, Nissanhttp://alflash.com.ua/Vacuum.htm
Vacuum 101http://www.ih8mud.com/tech/vacuum.php
remove an Oxygen sensorhttp://free-auto-repair-advice.blogspot.com/2007/07/how-to-remove-oxygen-sensor.html
Supra Headerhttp://www.tscperformance.com/supra_header.html
Installing a Greddy SP Cat-Back Exhausthttp://www.6gc.net/howto/install_cat_back_exhaust
Installing a Header on the 7A-FEhttp://www.6gc.net/howto/install_7afe_header
reset the ECU on a Toyota Celica GT4 ST165http://www.gtfours.co.uk/how_to/reset_ecu/reset.htm
check ECU error codes on a Toyota Celica GT4 ST205http://www.gtfours.co.uk/how_to/error/205/error.htm
check ECU error codes on a Toyota Celica GT4 ST165http://www.gtfours.co.uk/how_to/error/165/error.htm
Installing an Apexi S-AFC II on the SThttp://www.6gc.net/howto/install_apexi_safc2
Cure 205 Code 54 Post FMIC Installhttp://www.gtfours.co.uk/how_to/fmic/code54/code54.htm
fit a Dastek Unichip to a Toyota Celica GT4http://www.gtfours.co.uk/how_to/dastek/dastek.htm
Toyota starter problems and repairhttp://www.celicatech.com/forums/showthread.php?t=884
Is my alternator going out?http://www.celicatech.com/forums/showthread.php?t=12646
How to Test Check a Car Engine Alternatorhttp://www.2carpros.com/articles/how-to-check-a-car-alternator
overhaul a Toyota Celica GT4 ST165 Intercooler pumphttp://www.gtfours.co.uk/how_to/ic_pp_ohaul/165/pump.htm
make the intercooler pump run constantly on a Toyota Celica GT4 ST165http://www.gtfours.co.uk/how_to/ic_constant/ic_constant.htm
fit a Dump Valve on a Toyota Celica GT4 ST165 ST185 and ST205http://www.gtfours.co.uk/how_to/dv/dv.htm
Turbocharge your 7A-FEhttp://www.6gc.net/howto/turbocharge_your_7afe
modify the TVSV (Turbo Vacuum Switching Valve) on a Toyota Celica GT4 ST165 ST185 and ST205http://www.gtfours.co.uk/how_to/tvsv/tvsv.htm
Installing a MSD Boost Timing Master on a GThttp://www.6gc.net/howto/install_msd_boost_timing_master
overhaul a Toyota Celica GT4 ST205 Intercooler pumphttp://www.gtfours.co.uk/how_to/ic_pp_ohaul/205/pump.htm