G'day Tony
Sorry it's taken a while but it's a rainy day here so i thought i'd have a play in the shed.
These are the ducts for an a/c system, you can obviously see where 3 of the vents go and there's a small piece that goes up to the drivers left hand side vent.

DSC00339.jpg

And this is the fresh/ recycle air control that goes on the passenger side,you can just see the vacuum operated doohickey sticking out the bottom that controls the air flap, you also need to block off the hole for the fresh air vent that comes down from the cowl area on the drivers side.


Hope this helps.

Cheers Mark