Rev,
Have you tried "Stage 8" header bolts?? I use them and they keep the bolts from coming loose and blowing the gaskets.
A couple more that usually work...File the surface on the header where the gasket meets it. Make it FLAT. Also, you can cut the flange between the individual header pipes with a saber saw or sawzaw. This makes 4 seperate flanges on the head surface and they seem to contour better to the head.
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