Head gaskets-cometic or felpro permatorque

The only heads that I've heard those issues with were the first batch of Stealths... On those follow Source's recommendation and if it were me I'd visually check the gasket on each head to make sure because it was not every head that had the issue. I "thought" Source had addressed that on the later castings...
There are gaskets for the larger bores too - but IMO that's a waste space that will affect quench affect and compression but if that's what you have to do - I'd run a larger bore gasket with the pre-flattened ring before I ran a std round wire ring gasket on an aluminum head. But - I know others that run them that way.