? about 1940 nash

I am looking for some information for 1940 nash. I have a 1940 nash coupe that I am working on rebuilding and am wanting to put a modern frame under it. what I am wanting to know if anyone so happens to know is what modern vehicle would happen to have a frame that I could use.

Any information would be greatly appreciated

 

I just got a 1940 Nash Amb***ador 8, and the guy I got it from put an s-10 frame, with a camero rear end in it.