I don't plan on cutting the frame to shorten mine, I'm going to remove the bolts/rivets for the rear shackles (and crossmembers) and move them forward 48 inches (my wheelbase is 175 inches, regular longbox pickup is 127 for 1960-66), then drill/rebolt, and deal with the driveshafts/brakelines, and cut off the excess frame past the box...
