Converting Escort Heater Box Into A/C

Hello everyone,
 
I'm sure this idea has crossed other people's minds and maybe some have even tried but I was just wondering if there's any reason as to why you wouldn't be able to convert an Escort heater box to also have A/C. 
 
I could be completely off track here but what would be stopping you from placing an evaporator underneath the fan. Everything else associated to A/C I know you can make fit. I was thinking how good it would be to have A/C in an Escort but have it work with the current vents like modern cars do today. 
 
I'm sure someone will explain why it's not possible and hasn't been done but would like to make a discussion of it anyway.  

Went out to the garage and had a proper look at the heater box, you would have to completely remove the stock fan, get a slimline one and have a evap that would fit in the top round section, otherwise the blend doors will foul on it.

Thinking further about it that would mean youd have to figure out a way to run the pipes to it, because that section lives up inside the heater bubble, it would be a massive PITA but hey, anything is possible with enough willpower. 

Then I came across this..

https://autoaer.com.au/co...ng-heat-and-cool-kit-3

I was told by a wise old man to find stuff for hotrods as they are basically universal

More I think about it, the more I realise how difficult it would be to do AC through the original heater box. Dealing with the condensation on its own would be a challenge. Be better just to redesign a whole new system that bolts up but who has the resources to do such a thing.
 
Another option I thought about which Marty mentioned was finding another system from another car that you could make fit the Escort. Unsure if anyone has ever done that or if anything would fit an Escort.
 
I've seen a few different style AC systems such as systems replacing the centre console and the systems that go on the passenger's side but none of them do what I was wondering is possible. 

I've seen the systems Parttime and Marty linked but that's not a 100% solution to what I was wanting to achieve. All the vents are open at all times so you can't control direction of air (Demiser, side vents, foot vents). It also wouldn't let you just have fresh air from outside. 
 
Having a system that works the same way as the original heater box but also has AC would be amazing. never seeing such systems used in an Escort myself I wasn't sure if anyone had made anything work to achieve what I was wondering. 
 
Were there any other model Fords around the era of the Escort such as Cortina, Falcon etc that had a heater/AC combo box or were all AC systems separate to the heater box?

or shift further south.
Chilly start this morning.