I have a set of edelbrock performer heads for 302/351. They have been ported very nicely. Two of the pushrods ports have sleeves installed because of the porting. They are pedestal mount rockers which are included crane cobra 1.7 ratio. The heads have been gone through a few years back which included a valve job and the springs were replaced with comp cam Bee hive springs. The valves are 202 intake and 160 exhaust. Changing combination these heads are ready to bolt on. They don't need anything!!!!! Any questions please text 219 455-3527 $900.00