When I first bought my the Axles I put under it had a high steer mount welded onto the kingpin similar to how you do it on a Toyota axle.  The bolt's where sheared off but I figured it was because they were using low grade bolts.  I took out the broken ones, put in some nice high grade bolts, and went down to Moab.  Coming down Moab Rim I dropped off a ledge and sheared 3 of them off.  The 'fix' was to replace them, then go down to a local 4x4 shop and weld the kingpin in place with 3 or 4 layers from a good stick welder.  That knuckle never came off again, but the steering held with stock components until I had a chance to replace the axle.
The high steer kit's bolt through the caliper mounts, giving you the better point for leverage.