Rather than replacing the whole unit, the iSimple Tranzit seems to fit nicely.
Step 1: Parts Explained
The instruction seems simple and it was a 2-item charge list, so I requested to just paid for the unit it self ($60). Package includes:
1/2" power switch + cable
RCA to ipod audio cable
Mini-jack audit input jack
4' audit cable for non-iPod sources
Step 2: Pick a Spot to Mount Your Power Switch and Audio-in Jack
Just pull out the radio panel & label all connectors
With all power --SHUT OFF -- remove the power plug, open the terminals & splice in the Tranzit power switch.
Before re-assembly, power up and check for any blown circuits. Then dial in to either frequencies and test the iPod. You'll need to adjust the gain level too.
The volume won't be as loud as regular FM stations, but there's no static and damn it was fun doing it !