I put the 3" Calmini lift on my Trooper a few years ago. It is a good lift for the most part but my 20/20 hindsight tells me I would have purchased the control arms separately(which can be done) and pieced the rest of my lift together from other companies. The three things I do not like about the Calmini lift are 1) the crossmember IMO is junk and the stock member is far superior, 2) the shocks are a little disappointing, 3) the center pins which came with the add-a-leafs are junk and I had to outsource a stronger pin.
Other things. I think the shackles are fine but you can definitely get more lift from the DOR shackles. No complaints about the torsion bars, but a friend of mine is pretty happy with the DOR bars. I think they are both made by Sway-A-Way but I am not sure.
My two cents
Mike