He has dialed in his cams. And I would assume multiple external Fuel pumps would be the way to go, im not to sure about the coil packs maybe split fire or HKS stuffs, I will never reach such HP numbers so im not worried about that. Or atleast those are the parts I would choose. 600 with stock bottom end? I dont know how long it will last at these HP numbers I mean its a stock bottom end! lol