Add it yourself...
MR2 antenna replacementhttp://www.benreedjohnson.com/?p=42
Audio System Upgradehttp://www.challoner.com/mr2/tech/audio.html
MR2 Buyers Guidehttp://members.aol.com/mr2mkii/lookfor.htm
Toyota iPod installationhttp://www.discountcarstereo.com/toyota_ipod_installation.htm
Get sound from PC to Car Stereo / Amphttp://www.mp3car.com/vbulletin/faq-emporium/32430-how-get-sound-pc-car-stereo-amp.html
Soldering 101http://www.4runners.org/writeups/solder101/index.html
Series: Car Stereo Installation - how should I wire my amplifierhttp://www.clubknowledge.com/page5.html
Learn How To Install A Car Radiohttp://www.popularmechanics.com/technology/upgrade/3380301.html
toyota - Free Ebooks Download @ OnlineFreeeBooks.nethttp://www.onlinefreeebooks.net/?s=toyota
Technical Service Bulletin and Recall Informationhttp://www.alldatadiy.com/recalls/index.html
American Wire Gauge table and AWG Electrical Current Load Limitshttp://www.powerstream.com/Wire_Size.htm
Electronics Tips: Soldering Techniqueshttp://www.elexp.com/t_solder.htm
Abbreviationshttp://www.gtfours.co.uk/what/abbrev/abbrev.htm