[brossow]

Originally Posted by bryan76

this is off the wheel

Those must be the new revision that just came out -- not even listed on the Boss site yet. Not sure why they've reverted to -1AA for the revision, unless it's because they consider the different offset a new line. That +2mm offset gets them much closer to where they should be, with about 5.6" of backspacing instead of 6.3" on the older versions with a +20mm offset. You still may need to run a 1/4" spacer, but it depends on your individual setup, rear end width, tire choice, etc. Only ways to know are to measure carefully or just bolt it up and see what happens.

For reference, these are my 20x10 specs from back in 2010: http://67-72chevytrucks.com/vboard/s...=1#post3933454