Destiny came with a tired early A4 and I got a lot of free advice about "drop-in" diesel conversions. But driving the Crosby launches around and listening to the deck hatches coupled with advice from other wooden boat owners put me off the idea. I don't know if it's really true but they claimed a diesel can shake fasteners loose and might have to have soft engine mounts which can complicate drive line alignment. Besides, I was already a gasoline engine mechanic. What really nailed it for me was helping the distraught captains of million dollar yachts standing off Edgartown harbor ferry jug after jug of useless diesel ashore so they could pay someone to dispose of it.