ok, thanks.
I'm looking at getting hold of a w124 merc, but that's about all I can say for now. Oh, and an estate diesel.
Maybe I need to put forward a bit more info than that, but it's a funny one, you don't know what it is you don't know, sort of thing. That's really why a guide might have helped.
But the Parker's site will be a start.
Cheers.