you have to make an intake manifold and an exhaust mainfold. you will also need to modify the tranfer ports form the crankcase and cylinder head turn the piston around backwards along with the cylinder and head new gaskets base, head, intake, exhaust, longer fuel line. Then tweak the carb for it to run good. I'm not sure but I think that if I shortened the exhaust pipe mainifold where it runs from the engine to the tuned pipe it might run better I kept the length the same length as when it came out of the box. the intake filter was nice very little work to get the V-stack to fit and still use the airfilter. this will make the bike very quiet all I hear is the whine from the gears and the intake.
Norman

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