How easy is the Ranger to do? Cause in the XJ it's a 2 day job if you're doing it in 8 hour shifts.
In the 1st gen. Rangers like mine, it's about 45 minutes if you're going slowly. 5 screws hold the cover on the bottom of the air ducts passenger side, pull the heater lines, push the connections back to the cab, wiggle it out, wiggle in the new, connect and seal it up. Like the guys on The Ranger Station said, Gen1 good, Gen2 and beyond very very bad.
The hardest part about doing that in the Beemer was getting the drivers seat out so I could lay on my back to access it. Still a little less than an hour.
The 2007 Econoline 250 my friend has for his company that I've done all the work on, has the dreaded vent vacuum failure. A hack posted online didn't work, and getting in the dash requires C4 and a sawzall, so the dash cover over the vent vacuum thingies is off, and you do it manually.
It ain't pretty, but it works.