I recently installed a complete set of the Rancho RSX shocks on my 1999 F-150. These shocks are the auto-adjustable vs the manual adjustable.
The Ford factory shocks require 18mm deep socket and wrench to remove.
Install was straight forward with no problems. I did have to use a floor jack to compress the rear shocks to fit the lower mount.
I was impressed by the ride quality. Ride is definitely firmer with less roll in corners. And they do look sharp.
I purchased mine from www.4wheelonline.com. Total cost was $204. Shipping included, as they do not charge s&h.
A great purchase overall, and they do wonders for the ride.