Do they make a THIN headgasket for aluminum heads.

[rustbucket79]

These are shown as being another .003 to .005 thicker than the 1094's if it makes you more comfortable.

http://www.summitracing.com/parts/MRG-1130G/

[af2]

Someone can correct me if I'm wrong, but aren't the GM ones .022 thick if you wanted to go that route.

Gm says they are .028" compressed. They are Graphite coated and take less effort to clean when taken off. They still need to be replaced when removed.