(NV) Not ^ Van

I just bought a left over 19 and iam going to lift it 6in and run heavy hauler wheels19.5 & tires and there 35" tall and I want to go to a 4:10 or 4:56 and a locker of some sort.. and leads or any of these goods

Suspension: thinking of ordering a Rough Country kit for a titan XD and retro fitting it .. anyone tried this ! Vision 19.5 heavy hauler wheels off old dodge 2500 in blk with Toyo drive tires measure 34.5 tall and can handle tons of fun ! I have a tube bender so I plan on bending up a desert chase style rack ( . )( . ) may paint match or powder blk not sure yet ... Bought a leftover 2019 3500sl and wanting to change my rear gear ratio think 4:56 and a lsd ( limited slip differential )to tend with the big tires. need to figure out what aam axleis in the back of this machine ! Also needing a tuner to change tire and gear ratio not looking for power just something to tell the ecm and tcm the changes. any help is definitely appreciated

how did they turn out / fitment