Well, I basically took some of VC's beta screenshots and modded the cars ingame to make they look the way they were supposed to be.
Here's the list of cars that have been put back to their original versions:
* Banshee
* Blista Compact (Blistac)
* Faggio
* Fbi Washington (fbi car)
* Cabbie
* Cuban Hermes
* Hermes
* Washington (washing)
* Infernus (both Beta version and a Mix version included)
* Sentinel XS (sentxs)
* Phoenix (pheonix)
* SabreTurbo (sabretur)
* Sabre
* Freeway
* Greenwood
* Linerun
* Oceanic
* Police
* Regina
* Virgo
* Voodoo

Update: A lot of cars fixed by Almost610, Generic wheels made by NewportByChrysler