If a set of factry heads are from the later 1970s(after cat converters/lead free gas) they will have induction hardened seats and won't be expensive to refresh---if its for a driver that has been running good but you just want to freshen it for driving (not racing) there isn't any reason to go and spend thousands on aftermarket late model aluminum or spec type iron heads.


If you are going to race the car its a little different story--but also keep in mind the thousands you'll also spent on suspension and wiheels /tires/brakes------------