The models all correspond to car bodies that I'd like to scratch (ish) build to scale for use on RC chassis.

If I could find them in a suitable (or convertible) 3D format then I'd consider getting them prototyped in a hard foam or paperboard of some kind as a basis to then do some refinement by hand, ultimately using the form to make a mold to then create the final shells.

This is mainly for personal/fun use/purpose, not a new enterprise I'm thinking of.

I think I can probably create a Cheetah solid from scratch using common materials. The others require a lot more curves/work.

With more searching last night (couldn't sleep) I did find that someone was making a model of the Cheetah, but apparently never posted it - that was in 2006. I did find a model of the Lambo LM002 which was their production offroad vehicle, the "Rambo Lambo." It's quite a bit different, but I might consider it.