are you saying your gonna swap just wheels or the whole column? cause if u want tilt thats what ur gonna need to do the latter. if you just wanna swap wheels there shouldn't be any problem with doing that seeing your airbag is already gone.
well i just looked up on the grant website and they dont list a kit to work on a 90 mustang so im guessing because of the air bag they dont list it. so my best guess would be yes there are interchangeable but ive never done it so i cant say for sure.