I don't really like any kit which uses brackets to move the control arm closer or farther from the body, like the Ingalls does. They tend to squeak and sometimes bang up the inner fender.
Preferably you want a kit that consists of replacement upper control arms that have a moveable mount for the ball joint. Another satisfactory option is a set of ball joints that have an adjustment built into them.
King Motorsports and skunk2 make replacement control arm style kits, and SPC makes adjustable ball joint style kits.