So, this is the one I used
https://smile.amazon.com/gp/aw/d/B003ZUPK2K
With this compressor kit
https://smile.amazon.com/gp/aw/d/B000CFRZTM
I'm pretty sure you need this one. Don't quote me though!
https://smile.amazon.com/Air-Lift-57396-Load-Lifter/dp/B004JBX2LU/
There were 2 spots I needed to drill, even though it said no drilling required, the massive bolt they include to go through both the 5th wheel bracket, air bag bracket and frame. The hole for the frame was slightly off, so I had to shave it just a hair. Everything else went perfectly, including installing the compressor and gauge to control everything