I made my own with a little help from Morrflate (Valve Connectors) and decided my compressor would last longer if I did not install in the engine bay! (but that's just a me thing and I hate opening the hood every time I use the compressor)
I may be wrong, but it may be because of your parking sensors, I haven't seen the factory installed unit with the sensors.
It's not a difficult install by any means, I did it by myself one Saturday (Chinese copy), drilling 1-1/8" holes for the middle sensors, no extensions needed by unwrapping...