Cyclist,
I think you made a wise choice. I'm new here today, so hadn't chimed in on this before.
In 1992, a year after I bought my used 4x4 Toyota custom RV, the pseudo-dually setup failed. It was bolt-on Arrowcraft extenders. All of the bolts sheared. The two right rear wheels decided to go their own way down the road.
Fortunately, I had been alert to the odd pre-separation noises. There were a couple of loud snaps, then some thumps like a flat tire. I had stopped the rig several times to investigate and not been able to see or feel anything wrong. As I started up from the last stop and turned left out of the parking area, the right rear wheels came off at a very slow speed. The rig just set itself down, clunk. No one was hurt. I cannot believe how lucky I am!
Repairs, first a temporary one and then a full Toyota dually axle, plus repairing damage to the side wall, cost about $4000 in 1992.
I've been happily adventuring in this repaired rig ever since.
Good luck and safe driving with your new axle!
Toyota4x4RV