Thanx for your work...
A kind lad over at GTP helped me with the Callaway/West C4 and supplied me with a bit of code in order to "revert" the driver's skin to the default Kunos one. Just paste this at the end of the ext_config.ini.
[DRIVER3D_MODEL]
NAME=driver
POSITION=0, 0, 0
[DRIVER3D_HIDE_OBJECT_100]
NAME=DRIVER:HELMET
[DRIVER3D_HIDE_OBJECT_101]
NAME=DRIVER:GEO_Driver_FACE
The car obviously has no racing setup so it's a nightmare to stay behind the other ones, the creator of this resource has no fault in this and he made a good job in spotting the car, dressing it for the job with great care.
It should be used as an AI-controlled car and get jiggy with it.