I seem to have the same rear, and front, overhang whether in my box, my cab or just on the ground.... oh.... that's not what you meant. :+ Seriously though, as already noted, you may have CG issues adding that much overhang as well as swing issues in turns and underloading the steers. I'm not sure who could do the calculations for you to be certain it would be safe.
Leo Bricker, 73's K5LDB
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Owner, Panther trucks 5508, 5509, 5641
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