If it's original, it should have fender emblems that say something like: 245DL 2.1L in a little shield. Although now that I think about it those may have stopped with 1979 models.

Is there no trunk or hatch emblem? In any case what matters is what's under the hood.

You'll either have the B21F, a 2.1 liter 4-cylinder, notable by left side intake manifold and right side exhaust, or a B27F 2.7 liter aluminum V6, notable by being all big and aluminum-y.... OK, it'll have exhaust pipes on both side and a lot of space behind it, where you'll be able to see most of the transmission.

Good luck with it whatever you have. The GT wheel is cool too. I'm looking for one for my 88 wagon.
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::: Rob Bareiss, New London CT ::: 92 244 M47 211K ::: 90 745GL M47 273K ::: 88 245DL AW70 190K ::: 84 242DL Project ::: 70 VW Bus ::: 70 VW Pickup Project ::: 71 VW Notchback :::