Have a set of freshly ported x303 heads. Manley stainless valves 1.94/1.6 with 5 angle valve job. Manley triple springs good for. 640 lift. Comp titanium retainers 10* manley super locks. Has ARP 7/16 screw in studs with poly locks and FRPP guide plates. Heads have dual bolt header pattern for over sized headers with D shaped exhaust ports. Unfortunately i lost the flow sheets but i know they will support 550+ horse. Asking 1500, have 1000+ in just parts and labor. Can send pics by email.
