I am in the last stages of building my 400ex...I did the 416 kit, stage 1 hotcams, high compressiom piston, and ported and polished head..I also have some of the cheap carb. mods.. And Im just wondering how I'm going to stand up with other fourwheelers...modded and stock...700V-Force, Predator 500, Raptor 660 and 700,etc...