They are good axles, for their size. But they are narrow and require a lot of work. You are limited at about 38s on them. Expect to buy gears, locker, axle shafts, high steer, big brakes, axle truss etc.
They aren't reliable with lots of weight, big engine, and a heavy foot..

'88 Raider, 33" Maxxis, 2" body lift, 10K winch