[blykins]

I don't use the steel core gaskets. Just the plain ones.

The key to a successful intake gasket installation is to glue the gaskets to the heads so they don't move around and then use a very thin layer of silicone between the gasket and the intake. I also use silicone on the china walls. Cork/rubber can pose too many problems.

A lot of people have their favorites: Motorcraft TA-31, Right Stuff, etc. I use Dow Corning 732 clear silicone for everything in the first paragraph. Been using it for years.