Same way Ford did it, but with a single handle. Bear-claw latches at the upper left and lower right. Household door handle turns both ways, working a rocker and cables. Push it down, the bottom cable actuates the lower right latch and it opens like a door. Pull it up, upper cable actuates the upper left latch and it's a tailgate. Upper right latch is the standard slider type, actuated by cables on both sides of the rocker. Then it was just a matter of welding a heavy gate hinge into the left-hand tailgate pivot. Took about a month to figure out how to make it happen, but only a couple days to put together. It was my first welding project, and I surprised myself by not making a pig's ear of it.