Nathan P3 - installed in my 02 GMC Crew. I mounted a 5 gallon sausage air tank over the wheel well in the bed of the truck. Hopefully going to get a Viair compressor in the next few weeks. - but for now just filling it with my home air. The pics show 3/8 air line - I have since switched to 1/2" - and I need a different valve - that valve is for the 4th axle on a dump truck - to drop the axle when the truck is loaded - either I just have a bad valve or it's not designed to run over 150 psi - cause it starts leaking out the exhaust at higher PSIs - so that will be replaced soon too! This thing rocks - I hooked it to my stock horn and have it on a switch - so I can hit the panic button on my keys from across the parking lot and get a short LOUD toot!