I am developing a simple brake kit for the One Lap VR4 that uses Wilwood Superlites, Evo9 rotors, and custom brackets. All the testing is being done on track and so far its going great. I'm breaking parts and having technical problems that I am working out as I go along. As with the 3000GT brakes we used in 2010 the Wilwoods also suffer from pad knockback on our car. Part of the problem was a cracked hub which made itself known while on track. In an effort to kill as many birds with one stone I also replaced the front wheel bearings and installed knockback springs in the calipers.
Here is an article I wrote detailing how to rebuild the calipers and install the knockback springs.
and some selected photo's...