grinding dana 60 calipers to fit 15\' rims I heard about grinding the calipers on a dana 60 front axle to fit 15 inch tires. I got a 8 lug 15 inch rim from my buddy with 4 inches of backspacing as a guide and I started grinding my calipers. I stoped half way because it seamed like I had to take alot off but it looks as though it might work. I am also thinking about getting a 8 lug rim with 3 1/2 inches of backspacing because I will have to remove less material. Did anyone do this or heard of anyone who did? Do you know what size backspacing I need on my rim? I want to install 39.5 Boggers and they don't come in a 16inch and 16.5 I will probally blow a bead because I do serious rockcrawling.