There ought to be a half-dozen topics on this, next time, do a search.
CLK Race Car
VW Polo
Honda NSX '90
Honda NSX '91
Honda NSX Type R '92
Honda NSX '97
Honda Integra SiR-G (2 versions)
Honda Integra Type-R
Honda Integra Type-R 98 Spec
Shelby GT500KR
Toyota GT-One '98 (with Esso sponsors)
Toyota GT-One '99 (with Esso sponsors)
Peugeot 206 Rally Car (with Esso sponsors)
Peugeot 406 Sedan (with Esso sponsors on race mod)
And 5 Vauxhalls that are just Opels in disguise.
Honestly, the only real missing "cars" are the VW Polo, the NSX Type-R, and the CLK Race Car.
The rest are just copycats of available cars with different bodies or titles above them.