I flipped the arms and didn't notice any increased Toe In
Mod is good. Great for loose tracks. I filed back the inner arms at the rear to lengthen the wheel base back a couple of mm. The shafts popped from the out-drive from random impacts. Also running 2 whities on each rear shock shaft to limit travel. Kept breaking rear updated out drives (3) on a jump we have that has a crap landing transition.
Still using mod as I like the shorter wheel base, not sure of the benefits of having the shocks further back other than weight and front of arm flex.