A couple questions about supercharging a 440

Thanks for the advice guys! I have stock cast iron heads at the moment, I'm not sure what the casting number on those are either but i was debating whether or not to have some serious work done to them or if it would be worth getting a good set of aluminum heads. I've looked at some edelbrock Victor max wedge heads with 290cc intake ports and 100cc exhaust ports, and some trick flow specialties with 270cc intake/74cc exhaust. It would cost me double for the aluminum heads what it would to have my local engine builder work the stock heads, plus i would have him go through the new heads with a valve job and make sure everything is up to snuff, so that would add to it. Plus i wouldn't be able to run stock valvetrain with the aluminum heads according to the info I've read about each one. But, i understand in the long run it would be worth it if i decide to turn up the heat and make more power. I really appreciate the advice, I just want to make sure she lasts!