Another possibility might be to have a bearing shell custom sized with new babbit say if your journal were to clean up at .050 under. It shouldn't be too detrimental to the crank strength as these are fairly low speed engines, I wouldn't do it on a high performance race engine. I have restored several old cars from the 20's and 30's and sometimes you have to get creative where there are no parts available. Rebabbiting thin shell bearings is possible and I have had it done on several engines for which there were no available bearings and these motors are still running just fine today.
It won't matter if you have one journal a different size, If you can get a local machine shop to turn down the crank I could give you a place where you could send the rod and bearing to be set up.

Steve