check the distance between the mounting bolt spacing because some models have a 45mm spacing (i think the 97 SS has) and some have 60mm.
then, measure the distance from the inner face where they bolt up to the center of where the pads sits and compare with the other to make sure the offset is the same. If thats all the same, you should be right to go.
why do you want to swap? I would have thought the brakes would be comparable if not better on the s2r800...
well, i installed clipons on the bike. the coffin masters were in the way (see pic). i swapped out the coffins for the S4R masters. one thing leading to another, i'm now thinking of the changing the rotors and calipers... hehhehhe...
i may be wrong, but i was thinking that the 900SS calipers (4 pistons, 2 pads) would give me more braking power on the track too... at least not as grabby as the 4pad ones and i can still use them on the road! and i reckon mine has only 2pistons, 2pads?
the 900SS calipers have got 40mm spacing... need to check mine!
thanks!