Instruct: Classify the given review as either positive or negative.
Query: RV mechanic

These are not for the backyard mechanic. You will totally need to unload the suspension when doing this install. You will need to be very careful doing this! Also make sure you use safety stands and chock the wheels. If you are running a 3 in catback exhaust you will need to drop that down too. I also had to place a jack between the frame and the axle to install these. The ride is very stiff to you load them down for the first time(ie a trailer). After that,they work great! Very smooth ride for a extra spring on the suspension. *Notice* You will gain an inch or two higher ride height on the rear of you truck so be prepared to get you headlights adjusted so you can see at night.(this was on a half ton truck). Enjoy the difference in the ride.