The idea of having the bar on the passenger side is thats the side that moves up in the back. Thats whats suggested anyway, what happens in reality is another thing.
Im guessing the turbo is what caused the bracket to made the way it is, more power= more separation. As a certified web wheeling engineer, I would have had the lower mount level with the bottom of the axle tube. Less angle on the traction bar and better clearance. Sure its close to the diff, but I always seem to hit everything on the trail with my axles. I drive by braille!
The dimpled holes get covered in the plastic sheets. Less weight, stronger than flat sheets, and more bling bling.
Regardless, as Yella said, very good work!