There are tons of useful resources scattered around the web for GTM Supercar builders. Here are some resources that I have found the most helpful.

Factory Five’s GTM Supercar Homepage:
http://www.factoryfive.com/gtmhome.html

FFCobra.com’s GTM Supercar Forum:
http://ffcars.com/forums/forumdisplay.php?f=42

FParts Salvage on Ebay:
http://stores.ebay.com/Fparts

Build Process Checklist:
http://www.ffcobra.com/FAQ/buildchecklist.html

Ken’s Auto Body (StreetRodPainter)
http://www.streetrodpainter.com

TireRack
http://www.tirerack.com

RockAuto Auto Parts
http://www.rockauto.com