MikeGyver

iTrader: (5)

I reused the stock gaskets and locking bolts, but not the locking mechanism. It's been a year now with no bolt loosening or gasket leaks. I wish they offered gaskets like these when I was into 1st Gen small blocks. My good luck probably has something to do with the thick flanges on these headers, too.

GMCtrk

iTrader: (27)

The gasket is so thick is what does the trick I believe