It is an explorer axle that has 3.73 gears. I was gonna put 4.88 in it. I suppose the disc brakes would be what came on the axle. I am just unsure of whether to commit to it or not. as far as the front axle goes...I need a rear more than front for the time being...i didn't know what all needed to be changed to do the changeover myself, plus I can't weld.