Well... I compared them physically and came to the same conclusion. They're nearly identical. The pushrod openings are a bit larger on the L67 gaskets, but I don't see that as being an issue. The opening at the far top right of the gaskets (9089PT and 9918PT) are slightly different shapes, but about the same size. Nothing goes through that opening that I am aware of except some air and splashed oil.
The only thing I can think of that might matter is the crush thickness of the gasket. I'm trying to find that information right now.
EDIT: Just did some searching and it appears that the crush thicknesses are the same between the two gaskets.
That being said, I don't see why we couldn't use the L36's gaskets on the L67. If there is someone out there that has tried this before, please feel free to comment.
