I don't know guys. I had BOTH rotors from a 95-97, and from 98-99, and the 98-99 rotors WERE THICKER, they were NOT the same .882 thickness. I verified this with several brands of rotors, not just one manufacturer. I tried to use a washer to space out the caliper bracket from the hub, but that didnt work so well either. It just wasn't right. I had several auto parts stores ask me if it had steel or aluminum wheels, so maybe the offset of the hub is different on some GSX models..I don't know, but that doesnt really matter, since the actual gap in the bracket where the rotor turns in between, stays the same no matter what year. BTW, I ordered parts for a 98 GSX, both calipers and rotors, and the rotors were too thick. Then got the 95-97 rotors and everything was PERFECT. The new rotors will be the same exact thickness as the old stockers, but just larger in diameter. This is all I know , and know that works perfectly on my 98RS.

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
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-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)