These were ported by Muscle Motors. Flow 320ish and 250ish. Just back from the machine shop. New retainers, locks and seals. Guides good. Springs tested and are within specs. Roller springs 943 Comps. Valve job done. Ready to bolt on and go. 2000.00 usd shipped in Canada or the lower 48. U pay the pay pal fee or send me a moneygram. Thanks. Kim
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