who's interchangable?

Rock crawling aint street driving. Whens the last time you saw a rock crawler go around an expressway ramp at 70 mph? Adaptors are trash and dangerous to use. There are more 4 inch pattern wheels out there right now than we had available in the 60's 70's 80's and 90's combined and a lot of them are not expensive. I personally wouldn't even drive a car that had a 7.25 rear, they will break from just everyday driving. Move up to an 8.25(cheap) or 8.75(not so cheap) and swap to the big bolt pattern. The front don't cost much to swap, I've done the whole thing for under $200 many times.