S&S® Super Stock® 3-5/8" Bore O-Ring Style Dual Plug Cylinder Head Kit For 1966-'78 HD® Big Twins - Natural Aluminum Finish

Great machine work but I feel a lot of things are over looked for a high performance application I do like the intake ports with the velocity vain! The exhaust ports and combustion chambers were left completely rough cast only leaving potential for carbon build up and hot spots. The valves really are a lack luster run of the mill would really like to have seen swirl valves or something other than stoc