Vintage 273/318 head gaskets

MOPAROFFICIAL said
Looks like the head gaskets you would see on van 318/360 from 80's.

I see the small bore size though as an advantage for the 318 and 273 guys. You cannot find them with that small a bore size now. Smallest I see off the shelf is like a 4.040 and that's an almost 100 buck a piece Cometic.