Thanks for the info. One hesitation I have for that process is these connecting rods were originally fracture-split rather than machined. As such there are no dowels to create alignment. So unless the machine shop installs dowels, there's no way to re-align the top and bottom after machining.

I just contacted a gentleman on eBay who's selling a crankshaft. Fortunately he thinks he has connecting rods too, so I can likely buy from him.