I didnt use any brackets i had a friend machine 4mm off the mounting face of the calipers to make them sit in the middle of the disc then drilled and tapped my hub to take the bigger bolts the cosworth uses



The holes on the caliper didnt quiet line up with the hub on mine so i opened the holes up by 1/2 a mm in the caliper to give abit of clearance and they bolted straight on.

Mark.