I get the allure of aluminum after changing the heads on mine LOL. One option is Edelbrocks high compression version #60435. As far as the rest. The quadrajet is a pretty good piece when tuned. I went from 8.5 miles to the gallon to 10 by taking off a Holley 600 and reinstalling the q-jet. Not trying to dissuade you at all however. But it's a deep dark rabbit hole. What is your budget? If this is just theoretical on your part that's fun too. David