I still have my SuperGlide, but use a SuperLite now.
When I installed the air pin box I chose the long jaw version which is 5.75" longer. combined with the pin adapter for the SuperLite which places the ball either 3" forward or 3" rearward of the original king pin.
I currently have it forward so there is more than adequate cab clearance, but the back of the pin box can touch the box side rails. Before the next move I am going to reverse the pin adapter, which will still give me 2.75" additional cab room compared to stock setup.
2020 AT4 3500 SRW Duramax SB
2018 Denali Duramax crew (traded)
2018.5 Montana 3811MS Legacy
Lippert AirRide pinbox / PullRite SuperLight hitch