Re: XD/XE air con into an XC
I'm rebuilding an XW Fairmont and I've been told by someone who has rebuilt many old fords of this era, that an aircon unit from an XD - XF will fit under the dash, in place of the original heater box, of an XW/XY without too many problems. You just have to change the position of the two holes into the fire wall for your hoses.
My guess is if it can be done with this model, there shouldn't be any real drama with an XC. Anything's possible. I'm still contemplating wether I want to clutter the engine bay with an aircon unit.
Before you do this, just ask yourself how often do you actually use the aircon? Good luck