I am going to play devil's advocate here and start off with, "caveat emptor" is the word of the day when buying any used parts. That is why my signature line says, "Always verify parts or products discussed for your own use."
When you go to buy used parts, you had better know EXACTLY what you need. JohnC, I hate to say this, but you got EXACTLY what they said it was; any G50 transaxle after 1989 is going to have a long nose with the round mount! So, you really have NO reason to be pissed at GAD for sending you a '93 transaxle; they are a junk yard for crying out loud; albeit one that trades in high end parts, but still a junk yard.
They may have other issues and I am not defending them, in particular, but we can't expect them to know what we need; we have to know that.