Looks like someone removed the headlight wipers - very odd. Those would have been part of the cold-weather package (ASD & heated seats).

Can you post a photo of the CD player? Doesn't sound factory to me. A scan or photo of the window sticker would be cool also.

The car will be about as quick as a W123 300D turbo sedan. Factory spec is right around 13 seconds for both the 124.128 and also the 123.133... the W123 weighs 100 lbs more, has nearly identical HP rating, but an extra 20 lb-ft due to the larger displacement. Ends up being a wash. You'll need to check via stopwatch to find out if the power is normal or not.