273 Comando Head ??

pishta said
VICTOR REINZ 611061500 is about the smallest bore listed for new head gaskets at 4.162 now. Most all others are generic 4.180

Here is a very popular one for 273. It is quite thin compressed.
Fel-Pro Performance Head Gaskets 1008 Mr Gasket 1121G is even thinner and smaller by .040
This is an old thread but worth reviving.