So I need single rear wheel hubs for the GMC dually to convert to a single rear wheel axle. I was pricing them out and it makes sense to buy a whole dana60. So my thought process is to have the dually hubs turned for the front of the 40 and go one tons so I'm looking at selling my built FJ60 axles. Gearing is 4:10 front has Longfields (only installed never run) with the long field drive flanges, an Aussie locker, 4x4 labs high steer arms. Knuckles have been rebuilt but no brakes currently on it. The rear has a blue torch fab diff cover and a Richmond mini spool. Both axles has been sprung over using Ruff Stuffs kit to go on my 40. Your front springs will have to be out boarded to fit on a 40. Looking to get $1300 for the pair.