Did some welding.
I don't plan on going much bigger than 285s, the rear tire swing out is made to accommodate 37s or 40s or something like that. The stock 32" sat up too high so I wanted to lower it. Chopped some of the carrier plate, built a ghetto fab'd plate and welded it to the existing carrier plate. Looks ghetto, but you'll never see it.
I also wanted a way to attach my rear cargo carrier. I used the existing receiver, but when I have stuff on the carrier I can't open the tail gate without the tire hitting all the crap on the carrier. So, I wanted to move the carrier up and onto the swing arm. But I wanted something low key and removable. So I made a receiver tube and welded it to the swing arm, welded a set screw to keep things tight. Did some more work with the plasma cutter, welded on a piece of 2.5" receiver tube, and was done.
I have a lightweight aluminum carrier I typically use, that one was just what I had laying around to make sure it all worked. The nice thing is I can pull a pin and take everything off. The one that is built for this bumper is more if a permanent install with u-bolts etc. Everything is getting a coat of POR-15 and drying right now, then will get a coat of rustoleum textured black which matches the powdercoating on the bumper.