Hi Guys, I was doing research for aluminum heads and came across Pro Topline heads for BBC. I saw different comments from different people concerning these heads. Siome say they are good and others bad. From what I understand there were problems with early heads, then quality concerns. Then the company was sold. Can anyone tell the story acurately? I want to purchase aluminum heads for the blown big block and am in the middle of the recipe. Wanting to keep costs under control. Thanks for help suggestions.