Do all SM465 have the exact same trans-to-bellhousing bolt pattern?

[jumpsoffrock]

Locdoc saved himself from buying an adapter for his NV4500 swap by drilling holes in his NV4500 case using the original SM465 bellhousing as a "template"
http://67-72chevytrucks.com/vboard/s...d.php?t=673588

Do all SM465 bellhousings have the same trans-to-bellhousing bolt pattern?

I have a source on a bellhousing that mated a 350 to an SM465, and I might could use it, rather than having to tear my current trans out first and use it to drill the holes.

Thanks everyone.