I notice there's a lot of dash variation in the same model year as well. For example, the one i bought as a driver, has tabs in the bezel to mount the temperature control (which has the usual vacuum manifold one would expect of any car if you weren't used to VW's)....the donor car I bought has two metal ears and mounts the earlier cylinder vacuum manifold temperature control that we're used to (I'm assuming its earlier). Also the daily driver has a plastic defrost vent manifold, and the donor car's is some kind of pressed fiberboard.