Hmm, you need easywad to decompile the wads and replace the correct texture/file. About the pitcrew, judging by the name, it was made to be TSM compatible? There's something called the TrackPLUS or similar, just like CSM (Carset Manager) it creates folders to run season specific stuff. I hope this gives a slight help as a starting point.
yeah i know i have to replace w tex file in the wad but i dont know which one i have to replace?
i cant access TSM because it says i dont have the permissions to access it. same with CSM. Ive tried running as administrator and tried editing the permissions but no joy.