just to add my two cents,, do what YOU want,, and decide up front what do YOU really want to do with your bike,, you built it to do what exactly?? for me i'm into relaxing on a nice sunny day and just riding around peacefully to enjoy the ride and the fresh air,,, and thats how i built my bike,, if you want to drag a knee at 100 , any new honda/yamy/ suz/kawy , will do that safetly and easily , i'm sure you get my point,,.. i've never considered myself stupid yet i would never dream of thinking that i could out engineer all the honda engineer's... so i built my cb 450 to do what i wanted it to do,,, i bet you i never ever go over 50mph ( technically i guess i do half the ton,,lololol) but i smile the whole time....so dude it boils down to this ... do your own thing.... nvp