I have a set of bbf bluethunder heads complete for sale. They were freshened about a year ago with new springs. im not quite sure on flow numbers but I think I have flow sheets somewhere around here.They also come with jesel rocker set up, pushrods, carbon fiber dipped edelbrock victor 460 intake which is ported to match the heads and black powdercoated aluminum fabricated valve covers. These heads were on my 588 that made 980hp with a 750 lift cam. i have pictures on my phone and will send to anyone that is interested. im asking $5000 for everything.