Like Fordo, I also am thinking that the engine is a gas not diesel. Looking at the picture I am not sure, but do not recall there being a 4cyl Atomic diesel. There are diesels that are bolt pattern replacements for the A4. If it is a gas system, parts be will difficult to find but it should go easier o install. I have an A4 that can be rebuilt and If that is an option for you, I will talk to my mechanic. We are in Southern California. I am sure there are closer A4 to you in WI.
If interested, you can check out the electric systems at Electric Yacht
Good luck with your project, your boat is well worth the effort.
Last edited by Faster; 02-13-2011 at 06:31 PM.
Reason: removed commercial link