Dan,
Is your setup atypical? Why are you having to invent so much in the way of plumbing and mounting? I'm not questioning your decisions as much as I am trying to decipher the challenges involved.
According to the Superlite website, they include what's required for the installation:
STAGE 13 – AIR CONDITIONING $1,895
Air conditioner and heater. This powerful and compact unit keeps the occupants cool or warm, no matter the outside temp. Specifically engineered for the SLC, this unit includes the compressor, condenser, drier, super efficient and compact evaporator, a trinary switch and rotating, closing dash outlets designed for the standard dash. Provided with hard and soft lines and hose ends. A professional AC shop will normally be required to charge the system.
-AC Compressor Mounting Bracket
-AC Fiberglass dash manifold
-AC evaporator mount and duct system