Small block head gasket question
The indestructible head gasket, you'll break something else or crack a head before you blow one. I don't remember if they're what speedmaster recommends to run, but these are rebranded and sold by Edelbrock in their card pack with the plastic wrap for around 250% markup. Another honorable mention with a little smaller bore size is Felpro 107050.
Fel-Pro 17050 Fel-Pro Performance Marine Head Gaskets | Summit Racing
One I've been wanting to try lately a set of Mr.Gasket rubber coated .040 MLS with the 4.125 bore size.