I just bought new wheels and tires for my car and found out I have 2 different rotors on the Mustang II front end. 1 is 5x4 1/2 with 1/2 studs and 1 is 5x 4 3/4 with 7/16 studs. I am using the 5x 4 1/2 so if anyone needs/wants a 5x 4 3/4, it's FREE just pay to mail it. It's 9 1/4 O.D. you can see the specs in the Speedway catalog. I measured the rotor and it is .847
The Jalopy Journal
