Indeed, the Cragars always made the car. Only thing I can think of Russ is offset of wheel as you’ve considered but have disc brakes been added or as I learned some cars came with them. If the discs and calipers are too large also wheel/rim may not clear. Big problem with the Brembos and Ford eliminated spare tire for slime and compressor instead. I did get a special spare though that clears ft. & rr. brakes, very expensive though. Would love to see some photos of your ideas and improvements. Reminds me of me back awhile ago.