Building a 500 inch 440 for my 68 Charger. This will be an all steel, full interior car. I want the car to be able to run high 6's in the eighth mile on pump gas, mufflers, breather, etc. I have a 9 inch converter, low geared 727 with 3.54 Dana. The Charger has low hood clearance. What heads would you guys recommend? Anybody have any that they want to get rid of?