I just installed a Viair Air tank and 200 PSI compressor kit, air lift 7500XL air bags, and a PacBrake Amp'd Wireless bluetooth controller. I'm sitting at about $1400 all in but I like having onboard air to air up tires and water toys and I can control the airbag pressures from my phone. I also spent the extra money on Edge EAS accessory switches and pressure switch so I can monitor the tank pressure and turn the compressor on and off using my Edge CTS 3 monitor. It took some planning but I finally have it all mounted up and it works awesome.