HI Guys;
I installed this on my '81
Sony DSX-MS60 AM/FM/Satellite/iPod Docking Marine Receiver
http://www.overtons.com/modperl/product/details.cgi?pdesc=Sony-DSX-MS60-AM/FM/Satellite/iPod-Docking-Marine-Receiver&i=92230
It also has an aux input on the front, as well as front rear outputs, Sat support.
It is working great.
Hal