Ok so while iwas at work and doing nothing i decided to look up some info. Since im doing the GSX converion i decided to go with the GSX brake booster and Mastercylinder. BUTTTTTTT my job doestn sell them for some strange reason. So i decided to look up the 3000GT. i found out some nice stuff. The VR4 and SL share the same master cylinder and Brake booster. As long as the SL has ABS.

For the master Cylinder is 80.99 with a 50.00 Core
and for the brake booster 240.99 with a 50.Core

Its gonna be about 430. Dam thats alot of money

well i hope my info help some of you guys out. Take Care