I have a 1974 F-250 4x4 HB with a Flatbed. I would like to change the Cab to a 67/72 style. Since the HB frame is narrower, can I still use a F100 Cab. What were the modifications done by Ford and what will I have to do.

This same question applies if I was to change Cabs with the same year from a 2 wheel drive truck.

Thank you for your help?