Pete
I run standard RS Turbo calipers on the front, and standard Sierra calipers and discs on the back.
The whole servo system has been ditched and replaced with a home made bias pedal box, all plumbed in aeroquip split front to front, rear to rear with a tilton proportioning valve for the rears.
Pads are Mintex 1177/2, front discs are black diamonds and the brake fluid is Castrol SRF Racing. The whole set-up stands the car on its nose
Hope that helps & thanks for the comments - yours looks just

on track too
Tony