Rick, will wood doesn't offer a caliper bracket that will work with the Garanda rotors...would be a nice setup with the calipers from A 2005 Mustang GT
Jon
Mustang II Disc Brake Convers. Kits
These kits use the 11” rotors with a variety of caliper combinations. Kits are available as a bracket kit only or as a complete kit including calipers and rotors.
$79.00 - DF-102 - 4 Piston Caliper Bracket Kit
my brake system was from heidt's they supply granada rotors with wilwood 4 piston calipers and a bracket for the Mustang II spindle
i'm sure they would work out a kit for you minus the rotors if you already have them