I am finally getting around to installing the ARB Twin Air Compressor removed from GX and two prior 5th Gens. I decided to go with the Slee mount as their stuff worked well for me in the past. For now I plan to run a CH4x4 Toyota style switch in the dash switch bank to activate the compressor. When I get around to the second stage of the build (i.e. lift/wheels/tires/etc.) I'll install a Switch Pros SP-9100 along with other auxiliary lights.
I only installed the bracket and the manifold as I am currently waiting on the in-cab switch and a new wiring harness from ARB (apparently I damaged the old one when hastily removing it from the GX). I will need access to the firewall grommet to pass through the wiring harness once it arrives, so until then I have left the compressor itself uninstalled.
The install is fairly straightforward. Slee provides a new bracket for the air pump relays to get them tucked below the compressor bracket and you have to relocate the associated ground wire to a firewall stud. I was shorted a few pieces of hardware in the Slee kit which is unfortunate but I had to make a run to the hardware store for bolts to mount the compressor to the bracket so no harm or foul in the end. I'll update the thread and post completed install pics once the the new harness and switch arrive and can be installed. I am looking forward to having onboard air once again.
New air pump relay bracket vs. OEM
Relocated ground wire to firewall stud.
Compressor bracket installed with manifold/bracket mounted.