First, I hope I put this in the correct area? I just recently became an owner of a 1957 Belair sedan, its all original (except the fuel pump and line going to the carb) and unrestored. It's in very good shape, a bit of fading paint and both front and rear seats have a small area where the seams are coming apart. Underneath is super clean, the floor is perfect, the frame is straight only has basic surface rust and so on.... SO my question is, would value wise the car be better left alone and just cleaned up, or would swapping an LS based power train, like a 5.3 or 6.0 and an 4l65E just basic stuff nothing radical as well as power disc brakes and upgraded power steering be better? Just asking, I have ideas for what I'd like to do but just wondering which way would be worth more money down the road so speak...