About the lump port head...I've been speaking with Larry at Cliffors for some time now about a build on mine and he tolf me not to waste my money on the lump port because all their builds make power at under 5,000 rpm and the lump ports are for above 6,000 rpm.He said to go with a stock head but with 1.94 intake valves and the standard 1.50 exhaust valves.The 1.60 exhaust valves rob power on their setups.Thought I'd relay that info to you.
