On another thread quite a while back I don't remember who's thread it was. I described how I used to repair the bearing locations in Mack transmissions on my radial arm drill press.
I found one of the pictures of this process on my computer screen background http://www.homemadetools.net/forum/f...ckground-67767
the set up involves a 2" diameter 44" long boring bar with a #4 mt made specifically to fit the drill press and drilled for cutters to coincide with the bearing locations. pillow block bearings mounted to the side of the table and the base
click for larger image