I bought this stuff from Larry (REDSTANG89)---------(BRAND NEW RACE PORTED A 460 HEADS .bought as bare castings had ported for a street motor have ferrea 2.25/1.90 valves that were cut down from 2.35/1.94 for small bore motor ,back cut, P.S.I SPRINGS PART #1224 ,TITANIUM RETAINERS ,guide plates ,decked .008 for clean up .max lift of .750 flow 401cfm at .800 int. exh. 312cfm at .800 with no stack. Trick flow intake single 4500 carb , 1050 dominator, crane gold rockers , svo cast valve covers , msd billet dizzy w/bronze gear) Everything arrived in excellent condition. And was as advertised... Thanks Larry, would buy from again...