I had these checked at the machine shop for my own piece of mind. Heads were milled just enough to true them up. 73.6 cc chambers. Valve job done. Guides are good. Springs checked and all within spec. These are roller cam springs. Comp 943. New seals. These also have new retainers and locks. These are ported by Muscle Motors and flow 320ish and 250ish. Ready to bolt on and go. $2000.00 usd shipped and insured in Canada or the lower 48 states. Plus the pay pal fee. Thanks. Kim
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