Product review (5 stars): If you take your time, installation is pretty much fool-proof.
Extremely easy to install, took me about 15 minutes.  My only gripe is a minor one, and it's about the directions.  Since the pictures aren't very clear, and it would really help to be able to glance at them while doing the installation.  It would have been a quicker install of the Rack Adjuster Kit had the photos been clearer.  Many of the parts only fit in one way, so it's pretty much fool-proof.