wrong distributor?

So I went to the parts store to get the disty cap and rotor for our '87 carbed sedan.

The one I got was not of the right type. Upon opening the disty I found that it looked EXACTLY like the distributor from my '88 Hatchback (of course EA81)

Going back there, they said for the car I had given them, there was a screw on and a snap on. And I told them neither were right. So just out of curiosity, I told them to put '84 in as the year instead of '87. They pulled up the right cap and rotor, and out of all of this, what does anyone make?

did the '84 and older EA81s have a certain type, and the '85 and newer EA82s have a different type? this is what I thought. Or do all carbed subies (EA81 and EA82) share one type, and it varies among the rest? I'll post a pic later tomorrow of the distributor. Tomorrow I'm pulling the manifold to fix a leak and the carb to rebuild it, so I might as well be able to pull the disty and snap a picture.

btw - the carburetor rebuild kit I got from Schucks was $22 and has BOTH sets of gaskets (for the EA81 and EA82 2bbl hitachi) and the last kit I had gotten didn't do this. Is this common of carb rebuild kits or did I find the best priced rebuild kit? It's not like it has two sets of everything... one accelerator pump and some assorted, but the three main carb gaskets including the manifold gaskets, has both styles.