I put new 4.10s and Detroit Lockers in the Dana 60 front and Sterling 10 1/4 rear for the 37s. Ideally, gearing for the 54s should be 7.17:1 but going any lower on a Dana 60 requires a carrier change so I stuck with my 4.10s. I also kept the 30-spline front stub shafts and factory selectable hubs, which was another bad idea that I don’t recommend, but somehow they lived. I’d rather see and upgrade to 35-spline stubs and premium Warn or Dynatrac hubs or drive flanges. To cap the axle ends, we added dualie hubs from a Dana 60 that helped clear the big tires by pushing them outwards a fair bit. This worked great but added tremendous leverage to front axle wheel bearings. I think the best bet for 54-inch tires would be 2 1/2-ton or bigger axles, but somehow our 1-tons survived.