Join Date: Sep 2011
Location: The Hill Country of Central Texas
Even 14" wheels will fit over the original disc brakes used on Mustangs from '65-'73. CSRP and Chock sell kits to convert drum brakes to the original '65-'67 Kelsey-Hayes style calipers and rotors. If you get into some of the late model monster-size Mustang GT and Cobra brake kits sold by MustangSteve you may need to go all the way to 17" wheels to clear the calipers. Your choice of 15" wheels will be fine as long as you stick with normal size calipers and rotors.