Head gasket question

I never said I "had to have" them, I wasn't thinking that way originally but they just kind of came up, more of a curiosity than anything.
The head and cam swap are happening no matter what, I just saw what might be an opportunity to somehow make the swap better...
This car sits more than not, I guess that's the main reason I thought these marine head gaskets might be a good idea "since they happened to pop up"