For the AC, I previously installed two vents in the dash, one on the driver's side and one on the passenger's side. I connected these up to two of the 3 oval connections on the unit. For the two heat connections (closest to the firewall), I needed to make some mounts. I was going to install them under the dash and be able to shoot the heat towards the floor. Made these out of aluminum.
Installed the passenger side under the AC vent here:
And the driver's side to the right of the steering wheel here:
I taped up the unused middle oval AC output and connected everything up.
I sure hope the heater/AC works, because I never tested it before installing it.....
-Matt