9in to 10in drums conversion

^^ Chryslerfat, what are you thinking?

The 10inch drums require the 10 inch spindles, cuz the bearings are different sizes. I've never tried to put the 9inch LBJ onto a 10 inch spindle. Are the bolt-hole spacings the same. Ima pretty sure the bolt sizes are different,so I get the drilling part.

That is what I was referring to as I understand it the 10 inch spindles have larger bolts that hold the spindles to the ball joints. I have also read that the 9 inch ball joints may not have enough meat to drill for the larger bolts.