I also have a '91 which had been vandalized, and the prior owner had a hatch from waaaay back on it. It was rusted like crazy, just flapping in the breeze. I found a hatch that matched the color perfectly, but the window is not recessed.
It fits fine, looks terrific, and (most importantly) its done!

I would strongly recommend replacing the wiring harnesses before getting the used hatch on the car. Not too expensive. I did it the cheap way and I'm paying for it now... The car worked fine for a month or two, then the fuse for the pass rear brake lite blew and you guessed it.. it was the wiring to the hatch.

Even though the car's hatch doesn't match the year.. it works and looks terrific.

Good luck..

Larry