Yeah, when I wrote that, I didn't realize Mark had the whole unit green cup included. I thought they were just the half shafts, and I have only heard from folks that you can do it without removing the knuckle. I always remove the knuckle and replace as much as I can when I am in there.
And Mark, VXorado is right, do the inner seals if you do decide to drop the front axle. This is the only reason I dropped my front axle to begin with, because both seals were leaking.
Oddly enough, I have never had these seals leak on any of my Troopers, but my VX was leaking there pretty good.
Bart