Thanks again Grigg --- it is the GM/Chevy 3500 10 lug x 7.25 that I am looking at. Milling a quarter inch off the radius of the centers of the rims should not be too difficult. And as you noted, finding any specific measures is tricky. Lots of variants out there. I am going to an axle shop on Monday that rebuilds these units to get more precise measurements. Hope to be able to buy a rebuilt just for the sense of security it should afford. The shop came highly recommended.
Last edited by Tango; 03/01/2014 8:56 AM.
