Forged crank or billet if your rich. Contact KAN powersports and get him to make you a crank or TDRs 10 mil. CP super serval cylinders, 39 PWK carbs, UPP intakes, Matoon or Chariot clutch basket, Slingshot of finger style lockup, Chariot head, pro mod tranny, Shearer, Sniper or CPI exhaust.
cam at redline builds good servals