Just spent several hours cleaning the engine bay and exterior/interior of the E30. Tomorrow i am officially shipping it back to the US and the shipping company is pretty thorough with cleanliness. The engine bay was a real bitch to clean, 27 years worth of dirt accumulated in there but i did as well as i could. Hopefully it is up to their standards. Here are a few pictures after all of the elbow grease.
EDIT: Pictures look pretty crappy on here, look pixelated. Tried resizing to different resolutions but all look the same in the end.