Top End Needed

Get a double pumper on it, the intake should be fine, but I would add at least a 1" open spacer. The real bottle neck are the heads (as you probably know), but a double pumper carb should help with the 60' times, which in turn will lower your ET's. If you're buying one, I would go with a 950dp.

For what its worth, I ran an Air-gap intake on my small block stroker for a few years with a small 750dp carb, less compression and a smaller cam....it ran 10.89 @ 122 mph. So I don't see the intake as being a restriction.