After that 57 Chev, we can't let you give up Duddly ! If you asked me to model these cars in wood and metal I can, but I'm just not cut out for modelling in 3D software. A couple of possible suggestions come to mind here. (1) I have a few very old (50's)scratch build scale model books with measured drawings of a few classic 50's and earlier cars that I can dig out and scan for you if you can work from technical line drawings. (2) my other suggestion is to take some photos of plastic models and work in something like Photomodeller lite (free) to create the basic body shape. Both suggestions entail you creating an original digital image from scratch and I can't forsee a copyright problem with that. I have photomodeller but can't find time to get my feet wet. If my suggestions make any sense post a reply or contact me. Regards, Tommy.