hey phil, i'm always blowing them out so i'll be interested to see how yours hold up.
one trick i found was to cut the gasket in half so there are 2 ports per gasket instead of 4. it makes them a lot easier to replace because you can leave half the bolts in and just loosen them enough to slide the damaged half gasket out. when replacing the bolts on the damaged side they are much easier to start the threads because the header remains in place. just make sure they are all same type and thickness.
Jim O.
Unique 427 S/C #4279479
SA 402FE,Toploader,
3.53 Posi