I've got the basic 75 240D (W115) with the single speaker in the center of the dash. I am wondering if the 300D version W115 came with a two speaker system and if so, where were the speakers located, left-right sides of the dash, doors or behind rear seat? No slots seem available looking up from the rear of the trunk. I have an aftermarket FM stereo going into my single speaker on the dash and I'm looking to take advantage of the two channels.

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87 300SDL (115,000mi. 7/1/2008)
03 Jetta Wagon TDI (62,000mi. 7/1/2008)
75 240D(sold, sad to sell it, needed the garage for the SDL!)

Smokey