Was 1987 the only year the 603 was used in the 300d? was it used in any SDL's? Isn't this the engine with the cylinder head problems? My 602 in my 1992 300d was a rocket ship compared to the 617 i have now.

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1987 300D 180k
1985 300SD 330k Helga
1992 300D Lola 269k- Sold
1986 325 coupe Bessie >300k Original engine(ODO Broke) sold
2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it