[Adger Smith]

Dale,
That is what I mean about the rules building on one another, until there is a change in the next class. If you notice when you go from SS to SS GT the wording at the beginning of the GT it will say that GT forllows the SS rules with the exception of the following and go into the GT changed rules. So when it goes into modified it changes the head rules, like you said. Like my NHRA source said when I followed up with a phone call. Read the rules. They say nothing but a Factory part number head. Just my own thought, but If he wants a Ford with an alum head I think there are several available, but not FE's. My buddy RJ told me one time he had some iron FE's that were better than the Edelbrock Fe's, but that was in Stock. Hey, follow the rules. Do some iron heads on the FE and come out and play.