ProComp/Speedmaster aluminum heads

Can I ask "your plan" that these heads are supposed to help you accomplish??
Sure that's what the fourms for! LOL
Well first I like the weight loss.
Second I was hoping the heat dissipation would help with not having to have such a high octane level. Get it on pump gas.
And of course I would like another half-second off my quarter mile. And saying that in full understanding that I could possibly do it in other ways..