sleeving 8 3/4 bearing housing???

I bought this housing without axles. The guy I bought it from said that there were green bearings on the axles and the ball bearings gave up the ghost without the driver understanding what was happening. He swapped in another housing and the old one seemed too good otherwise to scrap it.

It is my understanding that axle ends usually fit over the axle tube. I presume that if you cut the old end off, you end up cutting the end of the tube off with it. Then how do you install the new axle end and have it correctly located?