72 340 Duster Bellhousing bolt size locations?

dano said
Are you referring to the Starter bolts or the two lower, outer holes that go through the block into the bell housing? I think those lowers are 7/16 course but I will have to look when i get home.

I figured it out. All the threaded holes are 7/16 and 5/16 for the dust cover holes.
All the holes are chased and now its ready for paint. Thanks