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I’m selling a brand new set of Frankenstein Engine Dynamics M311 LS3/LSA BOOST Monster Cylinder Heads. They are engineered and machined by FED in the USA. 6 Bolt Heads, 0.750″ Deck Structure, OEM/Factory Style Water Crossover Ports, 7/16″ Stud Size For Main 10 Bolts, 8mm Stud Size For Outer Tabs and Deck Studs. These heads are upgraded with CHE Bronze Guides, FED Severe Duty Intake Valves, FED Inconel Exhaust Valves, FED .700" Spring Kit w/Ti Retainers, and come with FED Billet Rocker Stands for stock LS3 rockers. Price: $3,300 Location: Orange County Call or text anytime, 714-794-7342

Those are nice. they make some bitchen stuff.