You will find that the internals and sensors are different. But on the other hand you could be creative and use the Surf transmission ecu and the 1uz ecu and get them to work in harmony .
Drive flange off a A340H will fit on in place of the 3 bolt coupling. You will need a different seal to suit as well. What about a shifter off an MX83 ? It even has switch for O/D.
Depending on which one you get The 1uz comes with a A341E transmission which has a shaft which looks much the same as that shaft but is a bit longer with more spline and a thread on the end. An AW4 is an A340E
Why not just use the drive flange off Hilux automatic a340h? It bolts straight on . All you need is a 40x55 seal to suit. I have not got my camera today so I cannot post a picture until next week.