I'm doing the same for my 94 DX coupe. GSR rear disc for $300. All the torsion arms, hubs, calipers, rotors. I'm also planning on doing a GSR or a Civic Type R motor swap. The thing i'm having concerns about is, front and rear disc size is about the same diameter. If i run a slotted rotor on the back alone, in theory it will run cooler and be more effective than the front. Heat is what kills brakes. Now, what to do till i do the swap. Live with it or spend a little extra and beef up my dx front brakes.