[Daves55Sedan]

My guess is, that if a 54/55/56 Ford car frame had been in a collision bad enough to parallelogram the frame, it would almost certainly mean that the front frame crossmember welds to the siderails would need to be ground off prior to any frame correction, and that the frame siderails around the giant steel pipe crossmember under the engine would need to be heated up red hot on both sides all during the frame correction process. Some of the other crossmember connections to the siderails are relatively fluid and might tweek fairly easily if they are only riveted, but all connections should be inspected for factory welds which may need to be ground off to permit correction. I would be very skeptical that any body/frame specialist would take these things into consideration. If you find that you do need frame work, you should be ready to point out frame construction peculiarities to the service man prior to an agreement to re-square the frame.