I don't think I would part it out.. Foose made a '55 2dr roadster out of a '55 4dr sedan on Overhaulin.. I could see another .. On average Tri 5 Chevy 4dr's go from $15k-30k restored/ compleated, compared to a 2dr's $40k- 100k depending on build quality. a 4dr would attract certin people, like faimilies with small children ect... of course, that car is in better shape than my '51 Fleetline 4dr ( altho mine is good ) and I'm restoring my car so I'm a bit biased. 4dr or 2dr, I'll take what I can get.