Add it yourself...
here is the stereo wiring diagram for our carshttp://www.clublexus.com/forums/showthread.php?t=115421
How to Wire New Headunit to the Aristo Speakershttp://www.jzs147.com.au/forum/viewtopic.php?t=53
How to remove your Radio/Cassette Head unithttp://bananags.grantham-international.com/GS_DIY/remove_head/
Lexus GS300 Car Stereo Removal and Installationhttp://www.carstereohelp.com/stereoremovalLexusGS300Str.htm
Lexus GS300 CD Changer Removal and Installationhttp://www.carstereohelp.com/stereoremovalLexusGS300CDChgr.htm
Wiring up your new aftermarket headunit to the speakershttp://www.jzs147.com.au/forum/viewtopic.php?t=538
Change stock speakershttp://bananags.grantham-international.com/GS_DIY/SPEAKERS/index.html
making an amp shelfhttp://www.jzs147.com.au/forum/viewtopic.php?t=1801
stereo upgradehttp://bananags.grantham-international.com/GS_DIY/STEREO/
Speakers Installed...PROPERLY (Official 2GS Install Speaker thread)http://www.clublexus.com/forums/showthread.php?t=104283
Soldering 101http://www.4runners.org/writeups/solder101/index.html
Get sound from PC to Car Stereo / Amphttp://www.mp3car.com/vbulletin/faq-emporium/32430-how-get-sound-pc-car-stereo-amp.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
Electronics Tips: Soldering Techniqueshttp://www.elexp.com/t_solder.htm
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
Abbreviationshttp://www.gtfours.co.uk/what/abbrev/abbrev.htm
