Who has ever heard of a navistar engine in a boat, I just went through the info Don put together for alpha legs and it made reference to navistar (international). So what will mount up to an alpha leg 7.3 powerstroke or a dt466 ?????
Go back and look at that page again, you will see that it covers ALL of Mercs drives, it also says they used the B2 or B3 drives, not the Alpha's on the Navstar 7.4 diesels.