This is from Soundings:

Parker 2530 Extended Cabin
Posted on December 09, 2010

parker_insideParker rigged a 2530 Extended Cabin with a 6-cylinder
Yanmar diesel coupled to Yanmar's ZT350 sterndrive (with a hydraulic
clutch) and bolted to an Armstrong bracket.

Parker thought a diesel option would open new markets. One potential
customer is the offshore angler seeking more range, which is double that
of the outboard configuration.

The diesel sterndrive should appeal to boaters who are interested in
downsizing while retaining the efficiency and reliability of diesel
power, Parker says. The specially designed boat will be on display at
the Miami International Boat Show in February.

Photo:

http://www.soundingsonline.com/news/...extended-cabin


Mo

http://www.boatingmag.com/engines/recycle-reuse-repower?page=0,3`



I'd prefer a straight shaft, 350 hp diesel, but this is an interesting
concept.