On mine, the tranny drain plug was directly below the axle boot. It had a square hole, you used a 3/8" socket extension directly, without a socket.

The fill hole was on the side, about the same elevation as the axle. It had a normal hex head, maybe 17mm. It was noticably bigger than the tranny case bolts. If you look at the tranny from the right-front wheel well, axle is center, drain plug is 6-oclock, fill plug is 9-oclock.