It's under the hood between the airbox and the ABS. Of course the stock airbox is no more....I have an AEM dryflow filter, mounted on a blingy chrome tube from an old SSAutochrome setup. AEM resides in a custom airbox (much smaller footprint than the OEM box).
Viair 380C with a 150psi pressure switch/relay.
If you look below the compressor you can see the mounting holes for the original airbox.