I would like to know what has to be done to put 430 heads on a 72 455. Will these heads do better than my 72 455 heads. I'm going to port them and put big valves in them. I just don't want to end up with $1000-$1500 in cast iron heads,I would just buy aluminum. From what I gather these are better heads, I'm just trying to stay on a budget.
