You might try a search under "Ford Leahman". Very popular marine engines. Also used as industrial engines and in a few bus/automotive applications. Both Volvo and OMC used to use the 4 and 6 cyl versions with their outdrives. Very popular with the trawler crowd because of their fuel economy. As far as I know, they used the conventional Bosch pumps so an automotive equiv would be easy to locate.
Bill
91 Buick Roadmaster/Avant 6.2 NA conversion (gone but not forgotten)
94 Cadillac Fleetwood (sold)
08 Aerolight 23TT
06 Vortec Max Silverado CC SB (sold)
10 Avalanche (electronic quagmire but love the truck)