Re: F250 4x4 Rear disc break/axle swap?
Unless you want to add larger tires, etc, I'd stick with the axle you have, as it's installed, and it works.
Adding a larger heavier axle can also mean drive shaft modifications. There are rear disc conversion kits out there. You can find them at Jegs, SummitRacing to name two. However, a conversion kit can run upwards of $1500 with tax for GOOD parts. Cheap parts you can get one for around $1K.
You might think it's easier to swap the axle for a few hundred bucks. Keep in mind that the F250 axle is already more than capable, and it's already installed. If you want to save a couple hundred bucks and some of your own sweat then axle swap, but if I had to do it, I'd just order a conversion kit to keep everything simple.
ABS is ABS, as long as the connectors fit, it'll work fine. Again, it's one less worry if you keep the current axle.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!