I had my Z32 front and rear brake setup for around 800$ and that is including a rebuild kit for all 4 calipers.
For that money, i cant buy wilwood FRONT brakes here in the netherlands. They are simply expensive...
If you can find the skyline brakes, they are really good (just as the Z32 brakes), maybe a little better because the discs are a little bigger. Most of those simply bolt on too.
Z33 REAR brembo brakes do nearly line up with the S-chassis, its only a couple milimeter on each hole that's different.
We drilled the holes, grinded them off and welded them. (pre heat the metal before welding).
To be sure the calipers line up with the discs, we installed them. Mounted the ears to the calipers, placed the calipers on the disc as they should be fitted, tacked the ears to the hub, dismount the caliper and disc and weld away
