For what it's worth, some years ago I painted all the logos and sponsors for a 1:43 model of this car, both in jpeg and in vectorial format, and I still have somewhere on my old HD, for granted. I think there's some Grand Theft Auto 3D model of the SLC, and if we can find a 3D modeler who's able to modify and make a template, I guess we could have half of the job done. Then...yes, the physics is a harder job.
Matteo