Vintage 273/318 head gaskets
It's become an uphill battle to find thin gaskets that can be used as a standard service replacement (60 RA deck finish) for a 318 that don't have over a 4.1 inch bore. Sure, there are some MLS options from Mr. Gasket and SCE that are Viton coated and don't require an ultra smooth finish, but good luck finding any. There has been a large volume of MilSurp and NOS Chrysler/Mopar gaskets through different vendors on eBay lately, though. Thought it was worth sharing. These should be good for over 10:1 with iron heads and premium head bolts or studs.