I thought I got lucky. I found a 73 164 in a salvage yard with a
manual transmission. I pulled the head and the pistons seemed good
and tight and no scratches in the bores. I bought just the short
block and took it home and %$@*&! the crank has been chewed on by
some maniac or run without oil because although it is smooth and
shiny, the bearings in it are .030 and .040 for the rod and main
bearings. Looking on parts sites, there don't even seem to be
.030 and .040 bearings.

So if I can find new bearings I guess I'm fine unless the shop
says that I need to turn the crank. What's the most these cranks
can be turned? Should I do anything special to the crank besides
getting it polished? Where would I buy a new crank?

On the plus side, the car also had a steel cam. Of course, I
think I'd rather have a napa sourced alloy cam but steel is cool
too. The wacky thing is that I've never seen a steel cam in any
motor anywhere in salvage yards, and the one I buy without looking
first at the cam gear turns out to have the steel gear.
chris