Scott,
If I had the original valve covers I would try to determine the number but the car has aftermarket valve covers on it. It's an L.A. build car so there's no broadcast sheet. I have not tried to gently degrease the 4-speed yet to see if I can see any remnents of the stamp. I was hoping someone would have a similiar car with a broadcast sheet and they would be able to give me the numbers for the valve cover and the trans stamp.
Chris