Good evening,
I have a Contemporary with Wilwood front brakes and Girling brakes on the inboard rears. I upgraded to the larger front rotor diameter but it still uses the same Wilwood calipers. I also upgraded the rear to vented rotors instead of plates but I don't that either upgrade makes much of a difference in just getting the lock up.
If you shoot me an email I can send you photos of my brake balance bar set up.
I had to adjust may balance bar and bed my breaks in to get the fronts to lock up.
mvanhorn8893@gmail.com
Mike