Figure 2-3 hours labor to install, and additional time to get height adjusted accordingly, plus an alignment. Also, to answer Robot's question from the 14th... I've been in contact with an SPC dealer to get the correct components to build the upper arms (minus a ball joint and bushings) and have sent a pair of stock arms out to them. I am currently working on sorting out what ball joint to use, and where to get the Delrin bushings milled. The adjustable upper arms should give you several degrees of adjustment to both caster and camber.