Don't know whose this is, but I have seen this type of tailgate on a factory vehicle.I use to
work in Michigan at the Willow Run plant and we made a tailgate on the Chevy Caprice and
Buick Roadmaster Station Wagons that we called a "Drop-Swing" 'gate. It's all in the
latches. I can't fully explain the mechanicals of this marvel of technology, all I know
is it had two seperate handles inside the tailgate controlling two seperate latch mech-
anisms. You would pull up on one, the 'gate would drop, you pulled out on the other, the
'gate would swing out. The years were '90-'93.Maybe you can do some on line research
to see some photos. My guess is with a little retro-fitting and some welding, you, too,
could have this on your ST!!!(If you don't mind a factory G.M. part or two on your Ford!).