i have searched thru the threads and have seen alot of people that have used manual racks from 79-81 mustangs on their cars, but my question is that autozone lists a manual rack and pinion for my car, a 1989 coupe for the same price as the one for 79-81 but is a different part#, is there a reason that the manual rack they have listed for my 89 not work? thanks for any help.