I have a 2000 model, have had powervalve fitted cdi de-restricted, and also slapped a Dell´orto VHSB 34mill with a Ram Air, also dropped the squish clearence on it standered it has a squish of 2.2mill will i dropped down as low as u can really to 1.1 m, man dont it rev hard now, also had it ported with a gianneli full pipe system, had it dyno´ed BHP is Now 44BHP!! and its set a bit rich so its running pretty safe, thinking of putting a 40 m carb on it and then it would be around 50bhp but very close to being extremly unreliable so i might not hehehehhe, if u need info on were to get all this parts and dyno testing porting etc, i will give you the address of the aprilia dealer or phone number of who did all this for me