i have a friend with a 440ex with a eldelbrock quiksilver anybody done this 2 the z yet ? i need more power i opened it up with yoshi slip on not the susuki wanabe and the alba maxflow kn outerwears 155main but i need more i ride the sand alot in oregon with friends with heavy med 250r ect i need to keep up please help im thinking more compr? cam i dont want to change bore or stroke thanks anyone in wash want to ride ?