Lets say he checks for cracks, cleans heads, mills surface, machines for oversize valves, new valves, hardened exh seats, new bronze guides, new springs retainers and keepers- so far what $600-$700 for a set of heads that flow 210-220cfm??? Now have them ported by a mopar guy to get good usable flow (260-280cfm) whats that gonna cost another $700? I do not know exact prices but the Source heads or Edelbrock are a win win smart way to go. If machine shop and porting prices were now what they were 25 years ago Id say have the 915s done up.