Howdy Ranger:
The three choices of available gaskets are all composite type. They are-
Brand- Part # Thickness Compressed thickness
FelPro-7916 PT-1 .055" .050"
Victor-3910VC .046" .044"
Corteco- 20336-CS .057" .053"
These are advertized thickness using shop manual torque settings. To be accurate you should measure for yourself.
Fel Pro are most commonly available. Victor used to be markets excusively by NAPA, but are available through other outlets now. Corteco is from our host, Classic Inline. I have not used Corteco yet, but will on the next opportunity. All should seal way better than the OEM steel shim.
Mike (Classic Inline) shows that a thinner gasket is coming from Cometco. I'm anxious to see it in a .037" thickness.
Is that what you needed?
Adios, David