[James]

Originally Posted by Jmclendon

I can't tell for certain from the picture. But, it looks like the older style plug doesn't have a metal gasket on it, is that correct?

The reason why I'm asking is I'm trying to work out whether or not the plug I need has a tapered or a gasket seat. Is there some way that I can tell by looking at the plug hole?

Yes that plug picture is a taper seat plug. The pencil is pointing at the taper.