Kerry Edwards is correct. These engines were pretty popular in the sixties and seventies in larger sailboats (over 25 ft. outfitted for ocean cruising) so there should be a product line available from someone in Europe. I would try looking on the web.

I recall someone I knew back in the sixties who owned a 33 foot ocean going sailboat with a 190D engine. It was quite economical and very reliable. I would guess it is still in the family and still running as it was only operated for several months a year.

Good Luck in your search, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)