If you have 15 inch wheels that will clear the late model 11.75 B body brakes then you should be good to go. All of the parts for the conversion are available as long as your wheels will clear the calipers. You should be able to get everything you need from Doctor Diff. Manual disc brakes will work okay if you have the big 11.75 rotors and big drum brakes on the rear. If you have the smaller drums on the rear then you might want to upgrade them.