LA engine, what size oil galley plug?

Cool, I actually had a few of the dorman plugs with the correct part number. I got it in and it fit great. The first one I tried was a 19/32 which is 1/32 larger than the correct one. I guess that was enough to keep it from going to its home.

Another related question. Most plug kits come with the correct style cam plug and also a standard welch type plug. Can these be interchanged?