personaly my buddy has a 02 banshee with the 4mil stroker with 67mm bore which is like a 408. something full cpi in frame pipes v3's its ported cool head filters and that thing ran like a champ on stock suspension with a +4 swinger now he has went to works shocks and its a difference....but if he wants to go fast and can handle the quad and is a decent rider i say go for the power