from a post I made a while ago when I was doing my KA tranny swap, the part numbers on the trans I'm talking about are ZL 71B #5...
I'd be willing to let go of it, if you are interested, but I'm not really sure what kind of shape it is in. I took the covers off to look at it, and it looked okay. No chipped gears or anything. It's been outside for a while now with the case still split, so it's probably a little rusty on the inside.