With the prospect of upgrading my rear differential and the rear brakes, I knew a revamp of my front brakes was in order. After doing some research, I discovered that my RX-7 upgrade was not not an ideal option to be paired with my future rear brakes. It turns out that the small piston bore of the RX-7 calipers left little to no options for a simple solution.
So, I went with something that has proven itself useful with the MPV, Z32 parts. These aluminum calipers have a giant piston bore but the matching rotor was too shallow to work with my setup. After some more research, I discovered that the 2006+ Subaru B9 Tribeca had a 30mm thick rotor at 315mm in diameter which had an ideal hat height. The only hurdle with these rotors was increasing the center bore to fit around the larger MPV hub bearing, which proved to be a simple task for my machinist.
From left to right, Subaru Tribeca, Nissan 300ZX, MPV.
Tribeca vs MPV, you can see the need to increase the center bore.