Originally Posted by crystalworks

1. No other hardware needed. You could get the paper "gaskets" for the to of the rear shock mount or reuse the ones on the air bags of they are serviceable. I didn't use them though.

2. The standard ones can get harsh enough. I run at a hair (2 clicks I think) on the stiffer side and it is comfortable. Tad stiffer than stock air, but plenty compliant. The extremes must be only good for people who get track use out of their vehicles. I also run at ~1.25" lower than stock if memory serves. I have a thread about the setup on here if you want details.