All parts are well thought out and fit well except for two issues. I had to cut the jounce bumper on the bearing block to avoid touching the screw on the underside of the airbag. Also, my '08 Heavy Duty Diesel has an aftermarket 4 inch exhaust that had to be modified so it wouldn't press on the airbag. Even with built-in overheat protection, I needed some space. to the Grand Canyon and back from Iowa. I like the ability to adjust pressure on the fly based on weight and road conditions. Ensures a pleasantly quiet ride.