I have discovered that I would have to modify the 3D chassis rear rail next to the pod to make room for the inline motor set up on the Mustang. That would still leave the Mustang fenders narrower, and with extensive mods to use tires that same width as the 70 Camaro. Therefor, after some consultations with other members I am dropping the full Trans Am suggestion.
We could do a 70 Camaro class on 3D Olifer chassis with many restrictions.