These are fresh and ready to bolt on and run.They were ported according to instructions on rhp website.they have been cut down to 64 cc chambers.2.19 /1.72 valves. New Milidon stainless steel valves. Fresh valve job, new viton seals. Springs are comp 930 dual with damper for solid flat tappet cam.155lbs on the seat. 10 degree locks and steel retainers also comp cams.7/16 screw in studs and 3/8 guide plates My 3400 lb car ran 11.20 with these on a 466. Located in Perry , mo.$ 900 free shipping. PM me here with your contact info for pics.