This is very interesting Brian, I could not find anything on that. I ended up going with ACL bearings and the machine shop will be installing them. I wonder if the ACL std will do the job.
So many little things come up in the process of rebuilding these engines for the first time, especially building an engine of unknown origin that i just bought. I'm sure this is not the end of the hassle. If I could go back in time I would have bought one from IPP, and it would cost me less than what I'm already into...ugh