here is what i posted on ITW a few weeks ago.
"it only bolts into the crumple zone. it does not have the lower bolt to the lower brackets on the frame. and i know some people have said that these are not needed, but i can tell you that on an off camber or strange pulls they are. mine have shifted and i am going to put a another grade 8 bolt through the frame down there to keep my ARB steady while winching. I only have to do this cause i had to grind the arb a little bit to make it fit correctly. I really think that if that attachment point wasn't needed both ARB and TJM would not have put it there. and both ARB and TJM have decades of expereince designing and manufacturing bumpers.
not to mention that there are no bars continueing on over the head lights. you can hit a deer, and still encur more damage than you would with a TJM or ARB bumper.
So for the same price as the Calmini bumper you can get bumpers from ARB or TJM that have decades more expereince in bumper building, decades more testing in places like the australian outback, moab and tellico, to name a few, and better protection from deer and such not coming from the corner. not only that, but the calmini bumper has no hi-lift points. heck all they had to do was weld on the same exact points that the ARB has, and people would have been able to use the ARB hi-lift accessoris with no mod. this kind of attention to detail has me worried.
So until someone i know and trust on one of the Xterra boards installs one of these bumpers, and does an side pull or a pull when on the downward part of a berm, i am not conviced that calmini has nailed this one. I would be glad to be proved wrong."