OK then, obviously not all kits are created equal...
I think the original steering box is well built for its original job and strong enough to handle the 9.00-20 (skinny) NDCC's, on and off-road, even on a winch-truck. "Armstrong steering" is perfectly tolerable, there, IMHO.
But that's about it. Put on some extra-wide supersingle, soft radials like the 14.5R20 Contis and try to park your truck in a tight spot like you always did.....
On top of that you find that caster now is insufficient (truck wandering all over the road) so you correct that, at the expense of even more steering effort... Than you realize that the original pitman arm actually is very short, that that causes bump-steer, that there are situations where a full right turn is not all the way to the knuckle stop-screw...., etc, etc.
That's when I decided it was time to do the upgrade to a more modern, hydraulic steering box..... almost ten years ago!
G.