Head gaskets-cometic or felpro permatorque

I always had a water seep with Cometic's on SB's I found the Mr.Gasket tri-metal's work better in the steel. But for a street motor I would also consider the use of a Composite gaskets. They seem to seal the water and oil a bit better . But the MLS do seal the high compression motors better around the cylinder.

You could also take the MLS apart and spray all layers with copper coat. This would be the ultimate Race / Street motor gasket choice for boost or NOS. Or you could have a fire ring put in the head and use copper.