"There are several ways to convert your axle to disc brakes, but we think this is the simplest and least expensive. "
cost me $150 for a complete mini axle assy and $87 for a knuckle rebuild kit to do my 68. i got stronger birfs, hubs and knuckles...does their kit offer that? my pig is going to be done for $125 + a rebuild kit and that's fj60 parts.
" Popular ways include swapping another axle in (flanges rarely match and you still have worn used components) or Mini-Truck / FJ60 Swap (hours of labor, trip to the machine shop for the knuckle arms, diving into the birfield, tie rod end incompatibility, and still used components. "
not hard to swap you old flanges on and i didn't have to go to the machine shop for the knuckle arms, so they are wrong there...not surprising considering it's jto. diving into the birfield is a good thing, cause it's probably could stand to be repacked anyway. i didn't have any tie rod issues...cause i replaced mine with later tie rod ends (which screw into the rod just fine...and you avoid those "used components" like tie rod ends which probably need to be replaced).
plain and simple...find another way.