Most people who have been in the hobby a long time still see 4 doors as front clip parts cars, or drivetrain donors if they have a V8. Ok to tinker with, but not worthy of dumping huge piles of money into, imo.

Four door 55-57 Chevys here are getting pretty pricey now. Finding a two door model is not easy as the older guys have turned them into high dollar street rods with big billet wheels, A/C, and power windows.