Wife wore out the manual transmission in her '87 wagon and the rebuilders wanted $800 plus to go through it, so I looked around and bought another transmission. Just discovered that it doesn't fit my drive shaft. This transmission has a tail shaft with three wings and three holes designed to connect to a flex plate sort of coupling. But my drive shaft has a conventional U-joint with 4 hole flange to connect to a different sort of tail shaft termination. Are there two versions of that transmission? Are the tail shafts swappable? To complicate matters further, on the conventional setup, the flange looks like it'll unbolt off of the tail shaft, but the winged version looks like it's part of a unitary shaft/coupling assembly. In other words, the winged portion doesn't appear to be removable from the tail shaft itself.