I have mine with a high pinion diff and 1 ton steering ends. It clears the diff by a 1" or so, cutting and turning the knuckles could easily put it into the diff, if you have a lp front though no worries.
Other then that it hits my oil pan when the suspension bottoms. Surprisingly enough my oil pan bent my 1.25" .250 wall DOM tie rod and my oil pan is unscathed other then removing some dirt/oil mix off the bottom.
I like it, but for the price of the kit i would go with trail gears 6 stud knuckles and arms for sure.