Heard back from Ryan, and it's not gonna work. I'll have to get a big block hub for this one and use it on another project.

Background: The damper assy is actually for a supercharged SBC application, which uses the same outer ring as a BBM (larger bolt holes is the only difference) so I figured with the right hub it would work on SBM also.

Problem is, I totally forgot that SBM and BBM have the timing tab on different sides, so it isn't going to interchange.

Guess I will get the correct hub for a B engine, and save it for the next big block project.