http://www.therangerstation.com/forums/showthread.php?t=4754
more axle weights. as you can see rick has the 28 listed in there as, 150 for the drivers side and 80lbs for the passenger side.
so aprx 17 lbs diffrence,(proably 10lbs if you take away the weight of the one beam I have with the passenger side boxed in with the 1/ in plate) plus the weight of the caliburs on the 35...10 lbs each....so aprx a 30lbs savings....
If you allready have the 28, a good pair of clean shafts, and you can cryo everything for free....go for it.what do you have to lose other than your time.
I know of a few trucks in the desert that ran 28's with out any real problems.But they almost never touched 4wd.As it was there for just to get rooling if we had stoped in a soft area.They pretty much just thought and drove the truck as a 2wd.
I would not rely on a 28 for runnning threw silt beds, or to climp steep lose rock hills.Or run it in 4wd even out in the sand to prevent bogging down in the sand with out using extreme care on the happy pedal.
after cryoing the axle shaft, the wenk leak i see is the hubs,then the guts on the 28..
but hell, if you got the parts and its free and your not going to run this as a comp. truck....go for it.