I'm new to this so I don't have all the technical expertise that many here have, but I'll give you my two cents worth.
I put a set of the 2" lift shackles from e-bay ($60 shipped) on because I wanted a "cheap" lift on my new sammi.
In the meantime, I also had to put on new bushings (40 bucks), I need new shocks now (40 bucks) and I'm going to have to get shims to fix the caster angle and hope that fixes the crappy handling - I could probably use some steering correction as well...
So I've exceeded $140 and should spend $100 more...
The lift looks good from the side, and the back (for the most part) - But from the front I look like count zukula or something. The front shackles hang almost as low as the front pumpkin...
YUCK
Now I've decided to ditch that lift and do what I should have done in the beginning - I'm getting a set of YJ springs - I'll run those in the rear with fabbed plates and TrailTough YJ shackles and move my rears up front with missing links. Add a dropped pitman arm for steering and some new shocks and brake lines from a junyard metro and I'll be good to go. I'm staying SPUA as well.
As I said - My two cents worth.