"About" the same but in fairness the 6.7L has not done the Rockies where the 6.4 was getting 6.5 and 7.5 on some tanks. That was stock of course. The tune and delete did not make that much difference, maybe 1.5 or 2 MPG. But on a good stock run I could get 9.0 on the 6.4 which is almost what the 6.7 gave me Friday. I think the motors might be close and the higher rear axle and the 6 speed gives the 6.7 an advantage. It's almost impossible to get a good read on mileage anyway. Wind is a big varible and of course terraine, quality of fuel and how full you get the tank when filling and then again when refilling. like I said doesn't matter anyway, can't do anything about it.

Where did you measure? I did mine at the very back using the black piece on the bumper. got 3 inches even. I think it was 23 to 26 inches.

 

did mine over the wheel well



before trailer





With 5th wheel

 

The insight has a video port but I haven't used it. I'm under the impression that it only works when in reverse based on the documentation.
If that would work, it at least reduces the number of gadgets you need.

 

I have a tri-fold cover so I can't see my hitch. I put a piece of tape on the end of the cover when folded that lines to the center of the hitch, and a piece on the the center of the king pin and line the 2 up in rear mirror as backing. Also have a piece on center of tailgate when folded down so as backing up I can line king pin up with it too. Also took center head rest out.

 

Seems like you need one of these...