Mark,
Since you didn't let us know what "235" you have it may be kinda hard to correctly answer your question.
I checked back in your previous posts and see you mentioned you were working on rebuilding a '55 - 235, but no confirming info on what the block casting number or serial number stampings are.
We need that info before we send you off on a wild goose chase for main bearings.
Another thing to know is what your crank mains measure. Are they stock, or machined down to correct a defect and require corresponding undersized bearings. Your machine shop should have provided you that info so you could order them in the past.
If you can get us up to speed on your block ID information and what the crankshaft main bearing journal dimensions are, we will be better able to try and help you find a possible source for bearings.
Dan
