Ray --
Don't take this "wrong" -- but the guys that do "renderings" actually try to make a living doing that -- they're not going to do freebies for you. If you can afford to strip the car to bare metal and do a paint job -- then you can afford to have someone do a rendering for you.
JMHO....
The pros that do this, all hang around Lat G... but until you contact one of them and discuss what this costs and arranging payment etc... it isn't likely someone is going to spend a few hours of their time trying to make you happy.
