This is the kit we use at our install shop ,
3p-3h
This kit is the self leveling kit that comes with arm sensors and also used with pressure if needed
1 Tank 5 Gallon
2 Viair Compressors 444
2 Isolaters
1 complete wiring harness
1 controller and also phone app
1 secondary compressor hose
3/8 air lite and fittings and maniflod.
 this is the top of the line kit . EVERYTHING YOU NEED