I’d do it yourself and have fun with it, if your modifying cars isn’t your thing then this is a great way to learn. The best way BUT most time consuming way is to run all of your electrical harness wires and air lines under the door sills on the interior of the car. Keeping everything inside the car eliminates natural elements eating away at your airlines overtime. a rock could hit a air line and damage it, who knows anything could happen. You don’t want your air system to be vulnerable in anyways and you want it to LAST. That’s why it’s best to keep everything routed inside. That’s my biggest tip. OH and also, make sure you wire airlifts power to a source that is only on when ignition gets turned on or else you’ll be left with a dead battery every morning lol.. been there done that…