I am in the process of converting my '06 Mustang GT to S550 6 piston Performance Pack Brembo front brakes with 15" GT500 rotors. I am using OE 2013-14 GT 19x8.5 Split 5 spoke wheels. The barrel of the wheel clears the caliper OD. but needs spacers so the spokes clear the caliper's face.
I...