I was looking at some great 113's on motoringinvestments.com and came across the interior of a 280SL that had a MP3 jack installed and hidden neatly in the ashtray. The caption said "this MP3 jack goes right into the back of the Europa II radio and plays through the stock speakers." Of course, the wire was fished under the carpet. Anyone have any experience doing this? Any opinions about doing this (either positive or negative)? Thanks!