The low profile vents were purchased with the Superfrost kit. Round ones were also available. The low profile rectangular vents work nicely maintaining leg room.

You can also see the position of the control unit in this picture.

One big issue with this setup was the amount of power the unit needs. It comes with its own 20 amp fuse and I ran it through a relay, but power was being pulled from the switched side of the original fuse block. This didn't work. It pulled to much power from the ignition relay shutting the engine down. Since the AC unit has its own fuse, I ran a dedicated wire directly from the starter to power the unit. This solved the problem.