A company named Rebuilders choice makes .001 under size. Kanter sells them under their house brand and Falcon Sales http://www.internalengineparts.com sells them on their eBay store. I would go back with .001 where .001 was previously. But I would Plastigauge them to make sure you have enough clearance. I like to install the thrust bearing last and try to rotate the crank before installing it. Sometimes the thrust bearing causes a drag that has nothing to do with crank journal diameter. You can measure thrust clearance with a feeler gauge. It looks like your rods are standard. I would go back with standard. Although the specs call for .001 clearance, I never put one together with less than .0015 and approaching .003 doesn't hurt anything. With today's lubricants you are not going to experience the wear we experienced 70 years ago. And oil pressure is really not that important. What is important is that you have enough clearance for the oil to get there. The main thing is that when you put it together that it turns freely. Otherwise you have a problem. The fact that you can see copper really doesn't mean anything. There is a very thin layer of babbitt matterial over the copper. Your engine probably isn't near as worn out as you think.
