Short answer: Yes.

Long answer:
As far as I know, they are all turbos. Mine is a turbo, its the same
year and make as yours. If you want to be sure, pop the hood. Look
under the air filter housing (from the side is easiest) and look for
two circular tubes under the filter housing. There should be a black
plastic duct (U-shaped) going from the bottom of the filter assembly
to the intake of the turbo. Likewise the exhaust should come out of
the turbo in a similar manner (but straight out no bends).

If you don't know what a turbo looks like, then do a google search
like this:
http://images.google.com/images?svnum=10&um=1&hl=en&client=firefox-a&channel=s&r
ls=org.mozilla%3Aen-US%3Aofficial&hs=SVt&q=engine+turbo&btnG=Search+Images

and it will show you what one looks like.

Look at your vin. If it is WDBAB33......  it came from MB as a turbo diesel.
Non turbo [1980 and older] was WDBAB30 or 123130.....