I have the same EXACT “issue” (four kids, want six seats) and the same questions. I’m in the market for a 2020 2500HD and want all the nice tech of the LTZ but I need the jump seat.
I’ve seen videos of people swapping out the jump seat with console in 1500s, but nothing in 2500s. I did, however, measure the rear base of a 2500 and 1500 console and they are exactly the same. I believe they are interchangeable. But I have not fully confirmed that as fact yet. Hoping folks on here can help with that ?