Copy the tex.files for the Bar drivers and paste into the cars folder in your GP4 dir. The same thing applies to Minardi. Really stupid, it seems the game takes these textures from the separate cars foolder and not the cars.wad. Sloppy work from the game makers.
Larry
AMD 3000+,Epox EP-8RDA,Ram 1536mb 333 DDr, Rad 9800 pro omega 2.4.96, dx9b, Audigy, MOMO FF,winxp