Which intake manifold
Hard to find, and not the ultimate performance manifold either, from what I'm told, but there are early factory Max Wedge sized port intakes floating around. They were dealer only items way back in the day, and NASCAR was the intent. I'll look for a part number....they were very good for MW heads with hood clearance on a B-body. Prolly do about as good as your gonna find for an A-body too.