I would suggest buying a Bluetooth radio so you can wirelessly stream music and have hands-free speakerphone and never worry about getting a ticket talking while driving. I have 2 Pioneer DEH 6500BT's and love it so much I'm buying a 3rd one.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked