I was working at Ford during those times. The 3 door hatch came with an optional V6. The same V6 that powered the Mustang II. That was around 1975'ish.
Yes,the 3 door and wagons had them though it was a rare option,I think on a heavy day it was 1 in 8 or 10 engines going down the line.
You'd know 1 at the "rolls" test though,they'd make nice sounds from the tires on the polished concrete floors.
Now to go way of topic,I had a 2.6 V6 ford capri,73 last year before the dog 2.8 came out.
I've been considering an AWD vehicle lately myself,I can justify the decision by stating that I live up in Canukville and I cant afford the insurance on the dogsled anymore! And besides I think I might even need a licence for the dogsled the way things are going.........