Hope this is not inappropriate, but my '86 Westy came with no radio, so I bought a Rampage/Audiovox unit from the Future Shop for $99 Canadian. I put it in last night, and since installation was so simple, I thought I'd share the link...

http://www.futureshop.ca/catalog/proddetail.asp?sku_id=0665000FS10010272&catid=11011&logon=&langid=EN&dept=9&WLBS=fs%2Dweb6&biasid=ABAD5B98D5DB4C8AAAC214D6CEE77BC8

They have 5 left. It has a removable face plate and an aux input on the front panel.
Here's a link to the unit at Audiovox's site:

http://www.audiovox.com/cgi-bin/ncommerce3/ExecMacro/product_mainpage.d2w/input?prrfnbr=277026

From there you can get the pdf manual for more info.

Tom