There are no aftermarket retro-fit kits . . . . To retro fit would require a complete tear down of the dash and vent systems . . . .
.... to do what you want to do would require major modification or replacement of the entire heating and ventilation system.
I appreciate the guidance of an experienced member and moderator from the form. Could you guys please tell me what issues you encountered when you both try to do this retrofitting process? Try to be as specific as you can and maybe add when you attempted to do the mod and what year Ranger you attempted this on.?
I'm an engineer, and I'm going to be modifying my Ranger to accept a cabin air filter. Any information about things that you've encountered could help me streamline the process. This way when somebody else asked about it I can give a response as knowledgeable like you gentlemen but respond with a specifically how difficult it is as well as exactly how long it will take and what materials will be needed. I don't want to be just making hypotheses, and have other people mistaken them has facts. I'm trying to be helpful as I can to my fellow Ranger enthusiast.
Also, I will ask this question here that I've asked on many other forms.
It could save me a lot of times and research if somebody would be able to let me know, what years of, pickup trucks and explorers & escapes., did Ford first manufactured the vehicle with the cabin air filters.