Thanks Mike. It seems we are thinking the same. The bearings i found are $87us each which is a lot better than $180+ for the correct ones. I struck out in trying to find used ones. One local place just wanted to sell me the whole tractor. I think they are liquidating their salvage yard. Depending on the year and condition i might just go ahead and buy the thing for spare parts.
I am going to order the bearings and then do a test fit to see how things come together. 2-3% loss of surface should make any difference. Most of the time i will be using the backhoe part of the tractor and won't be farming with it. I'll post my results when I have it figured out.