I have one sitting in my tool-box. I wired it up a few months ago and the fm stations sounded pretty good. I don't have any 8-track tapes to test it with. It's a Pioneer tp-900.
Found this one on Ebay, same as the one I have but mine is not that clean.
http://cgi.ebay.com/ebaymotors/PIONE...ayphotohosting