I just put speedwerks head for low elevation on yesterday, and all I can say is WOW! this was the best mod Ive had yet.My other mods were v-force3 reeds, 4 bulseyes, bmp single pipe,ss can, dd clutch kit,studs.Now I am going to put fuel reg. on. Does anyone else have these mods done, and what else sould i do? seems like clutch is bad out of the hole, but after that HOLD ON!