Hmm. According to the "applications" list the set I linked appears to be good for all V8's, it list's 318's all the way up to 440's. And that matches what I know, I've seen the BB spool mounts and they look the same.
It does not include slant 6's though. Which is weird, because I'm pretty sure the inserts are the same for them too. They looked the same on the set that originally was on the /6 in my Duster. But I didn't hold onto those mounts and I didn't try to fit them with poly inserts, so I don't know for sure.