Quoting rgeier11:
Those are correct. The only difference is the Galant came with 2-piston calipers stock, so you will need appropriate pads.
So did 93-99 AWD DSMs. The 90-92 AWDs, all year GST/TSIs, and of course the NT all came with single piston calipers. There is also a difference in rotor size too between the single piston and two piston brakes. The rotors for the 2 POTs are bigger, but the OP should be good to go if he got the rotors specifically for that year GSX.