I had the sagging problem with the Calmini springs when I had my Amigo. They did send me out new springs after I told them about the problem. It seemed that the first run of springs didn't use as thick of a metal for the coils and they were not wound too tightly. The replacements were much thicker and wound tighter.

My suggestion would be to go through Indy4x or Darlington and get the OME springs and some shocks. That is how I lifted my Trooper and it was much cheaper and easier to do.

Mike
2005 Toyota 4Runner SR5. 1994 Isuzu Amigo XS 4x4
http://community.webshots.com/user/98amigo