Nate,
6. 5" = 165. 1
I still don't understand WHY the idiots at FoMoCo could have possibly thought it was a good idea to change the bolt pattern by 5 lousy millimeters. I would have been really upset if I planned on swapping wheels from one truck to the next to find that out. Now if they had changed it to 10 lugs or to a much larger bolt circle for strength I would understand, but 5 millimeters??? I guess nobody cares if anything is standard anymore...