@andrea1978
The problem Crew Chief - Anniversary Patch is not a real one if you respect the following order of the install.
CC absolutely needs to be installed first immediately after copying the original Steam GTR2 to another folder at the root of one of your disks.
But please follow the exact "Happy Path" explained in the CC pdf readme.... else it will not work.
( I forgot 1 thing when reinstalling the latest Anniversary Patch and I had to begin again from scratch !
)
Once CC is working ... and only after installing CC you may then apply the Anniversary Patch and modifying the GTR.exe with the Raceroom one etc...
Then only you'll be able to have no grey cars any longer.
GTR2 CC with VR + special wipers for example is working perfectly with the whole content of the Anniversary Patch.
But one last time, the only condition is to install and have CC working before anything else.
NB: no VR for me but CC and all its other advantages are working for me with Ann. Patch installed.
EDIT: on the contrary of what's said in GTR233's readme .... for Crew Chief only the config.exe needs to be run as administrator but not Steam original GTR2.exe ... and moreover with no compatibility mode.
That's perfectly mentioned in CC readme..... each exact step must be done with all details perfectly matching the given explanation.... else there's a problem with the needed d3d9.dll
I must admit that it's a bit complicated but that's the price to pay when loving GTR2 in 2021.