I reread your post and a few points I might mention. Frame: look your frame over closely. If you plan to use it you mentioned kits and I mentioned Speedway. The sell a kit to go to Mustang II. They also sell the cross member for the Mustang II and they have instructions on how to do it. The only problem was they said that the kit included boxing plates for the frame and they did not have boxing plates. I bought 3/16 steel and boxed the frame. If you want HEI you will need to give the engine room at the firewall for the HEI. Several companies make radiators for V8 in these trucks. You will need an after market steering column for the Mustang II steering. You can weld in, bolt in parts to adapt to the new stuff. It’s all available. Mine has an under dash swing pedal for power brakes. If you are not going to use the 6 cyl motor I would save the money and spend it on my truck. Do your homework. Get on line and get catalogs. Have fun and good luck.
