Hi, I'm new here. Just happened to see the question about a 56 frame swap. Met a guy at a weekend cruz in Maryland with a 57 P/U. Said he used the front end out of a Aspen/Volare. Said it took him about 4 hrs to complete and that he had never done anything like it before. All he had to do was cut out a small notch on both sides of the truck to clear the shocks and weld in a small patch to fill in the notches. No frame chops or anything. Donor car came complete w/ disc brakes and steering. Didn't even drop the fenders if I remember correctly. If a novice can do it, mayb any of us could. Hope this will help.