EMT_diver I have the Skid Row frame inserts in my truck. Now the reason I did this because three of our club members have KMA rear bumpers and they are built with frame reinforcements that go into to boxed channel of the Xterra frame.
I just wanted to make sure that the Calmini would be able snatch someone up a hill if they were stuck!
It's worth the $100 in my opinion.
I can send you pictures if you'd like.
If I were you I would get the SLR 3leaf AAL their set up is much better. I have installed the Calmini AAL and there is no retainer to keep the leafs aligned! SLR's kit has the retainer.
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Liberalism is a dangerous mental disorder.
-Rick