Your numbers on my 596 heads are much better than what I would have guessed.
I'm just right now taking a wild guess that somehow I didn't hit every button on the mark As far as tuning. I'm having a hard time believing that I set the timing just perfect and the jetting just perfect and went out and did the best the car could do. Also I got my two step working again and maybe I can get just a little at the beginning.
Now that the cages out and the cam is more mild and the gears are more comfortable along with the rest of the car I'm starting to use more fuel. Again I would like to not have to go get race gas to add and or have to carry some with me to pollute potential refills.
I've just tried to weigh all my options how to get 1/2 second comfortably and use pump gas and it seems aluminum heads fit the bill all the way around.