my 86 had no billet parts , had hardened stator and drum which are considered the minimum for any 200-4r rebuild, launched off the stage brake over 600 times from 1.4 -1.5 60s (6-12psi) running with approx 600hp
as far as the shifter the original stage brakes (and the ones hoffer was selling in his trans) came with a modified shifter gate (check art carrs site, though he gets too much youll get the idea)
i didnt like the supplied gate because it was designed to bump off the brake and go directly to 3rd , this would cause short shift with the stock brf valvebody , instead I used a stock shifter gate and modified it so i could manually shift the 2-3 and 3-4 and used a clip on the selector gate to prevent from going to neutral on the 3-4 upshift