[Adger Smith]

Carl,
Since Dwight opened the door & Just like my PM to you:
I feel your pain on the part # rules. I think it is all about money. If a company sees a way to get a performance head cast, or other parts made, and they sell it through their performance division they usually put their part numbers on it. It is just another one of those "Follow The Money" deals. No one at GM wants to sell Pontiac performance parts since there is "Oficially" no Pontiac.