Only the Euro M3's had floating rotors. And I think any year (94-99), but I'm not 100% sure. Some people with Euro M3's swap them for normal M3 rotors without knowing the difference, or because the non-floating rotors are a lot cheaper.
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."