Ray, I figured you would be. A good set of stud girdles are a great investment. I did not think you would be able to get away with factory studs in that thing without them.
Paul
Paul, I can't say for dead bang sure they are GMs. All I know is they are the same ones that were in the heads in 1990 when I got involved with the PS 89 boat. AFR did the heads, but they don't install the studs or guide plates. It has Crower roller rockers,(same 16, never a valve train failure) but the studs "look" stock........Ray