I tried the contigs for the NR2003 cars and they were a bit screwy. I downloaded them from somewhere but it was optimised for the SuperSpeedway.Net CoT mod.
http://img19.imageshack.us/img19/673/nascar.jpg You want the ptits logo of quotation it is indeed it?
You'll find some sponsor logos here http://www.johnforceracing.com Just click the sponsors link. There's also some larger logos here http://www.holley.com/Logos.asp and here http://www.teamjegs.com/multimedia/logos.asp I hope these are of some help.