Perfect for my 01 Sierra 4.3. I've always used Fel Pro pads and never had a problem. After reading the reviews I was concerned that one page was too long. It only gets too long if you push one side into the groove and push all the slack into the other corners. I simply indented all the corners and then indented every 2 inches. About every 2 inches there is a small burr on the gasket that holds it in the groove and it works great.