Your bike should have a 20mm solid rear axle and 25mm hollow front axle... See list below for possible sources for matching wheels. Most will have 3-spoke brembos, but you may be able to find the few bikes that got 5 spokes (SBK front wheels would work, S4 wheels, etc) or aftermarket wheels off of one of these bikes.
I didn't have info on STs when I did this list, but I think that they should follow the SSs pretty closely.
Monsters
`94 - `99 20mm solid front axle, 20mm rear axle
`00 - `02 25mm hollow front axle, 20mm rear axle
`03 - ? 25mm hollow front axle, 25mm rear axle
Supersports
`93 17mm solid front axle, 20mm rear axle
`94 - `99 20mm solid front axle, 20mm rear axle
`00 - `02 25mm hollow front axle, 20mm rear axle
`03 - ? 25mm hollow front axle, 25mm rear axle
851-type Superbikes
`90 - `93 17mm solid front axle, 20mm rear axle
`94 20mm solid front axle, 20mm rear axle
916-type Superbikes
`94 - `03 25mm hollow front axle, Single sided rear
--Fillmore