Header Gaskets 340

I have run the Remflex and Percy. Both work great and solved my on going exhaust leak problems. They both are closed on the ends where they hang on the bolt/stud. I have studs end of the block and couldn't get my headers far enough away from the block to get the gasket on. Ended up having to clip the gasket in order to use them. The Percy is aluminum and ends were not as fragile when I had to clip them compared to the Remflex. I think you will be happy with either one.