Oh, this is simply a dream thread and I agree 100% with your assessment. Powering the Ferrari is unobtanium unless you shoehorn a later model BMW V-12 or something like that. The Chevy is totally buildable if you stretch the front frame and have tremendous glassing skills (again, only said skills and time limits me from attempting one).
If I ever hit the Lotto I'll buy the roughest '63 I can find and hire someone to start hacking.
-Dean