which heads for a 408ci?

3500.00 canadian dollars a few years ago. remember the canadian dollar was about .70 cents to the u.s. dollar and the heads cost me 2000.00 even. 11.0's is very impressive but in what kind of car. my challenger ways almost 4000lbs with me in it. that motor that ran 11.5 in my challenger is going into a 2500 pound tube chassis duster. the edelbrock heads i had were unported and my w-2's have had some pocket porting done to them in the past as well as 2.08 valves. but 3 tenths is a significant gain just buy changing one thing, the intake manifolds were the same brand, edelbrock victor w2 and an edelbrock victor so there was no diff there, same headers and the same carb same cam etc.