I have a complete air con unit from a baywindow kombi.It was one of the late 70s dealer fitted units. I want to fit it in a 73 twin cab ute. Where do I start........Any help or ideas ?

U may have to cut it down in length to fit the twin cab

It fits OK that way. Goes from the rear view mirror back to just behind the front door pillar.When you are in the back seat of the twin cab and look up its like in an aircraft.Does that make sense ? Think I will have to put up some pictures.

Is this to go into a blue twin cab with new beige TMI interior?