We do a ton of Vintage Air. We have a hose routing that goes through the old heater blower area and comes through the side kick panel. For control there is a 3 knob controller we can supply that 1 1/4" X 4 1/4" and come in polished or black ano, vertical or horizontal.
I wish I had some pics, he is the VA page on the controllers
http://vintageair.com/catalog09/09%2...talog%2018.pdf