Not sure how rare they are Dave, but one in decent condition (working, or not), with or without, the wiring harness will fetch about a $100 bill or better on evilBay. In '68 they were listed as option D3 on the window sticker at $116.83, and 13.2% of total '68 production (49,284 units), had them installed. I'll let you do the math ! New replacement drive belts for the 8 track tape player are also hard to find. :TU:
