The VR-4 caliper is different (rotor and caliper are larger) than the Base Model's. The Base Model 3000GT caliper is the same as the GSX caliper just like thedawg said just make sure to get the right flex lines and he'll be all set.

________________________________________
95 Eclipse RS - Rolled
96 Eclipse GS - Traded
95 Eclipse GSX- Sold
01 Blazer LS 4.3/5spd dropped and clean DD
88 Camaro RS 361 CID with a 6spd and a bar 10 second street car on motor.