Thanks to all that responded and helped shed some light on my situation / questions.

I checked my VIN number as 'turbodiesel' recommended and it does indeed begin with WDBCB25......also according to the MB local dealer's service records the engine number is 603.96.... They told me the engine number is stamped on the engine but I haven't been able to locate that as yet.

They also presented me with records that show the trap oxidizer was serviced at 48k and replaced at 116k (along with the turbo).

I've looked for the trap on the passenger side of the engine and do not see a 6-8" cylinder as 'sixto' suggested. That makes me feel better, however I also don't see the 3-4" cyliner either. I'm looking around the battery and coolant overflow reservoir area.....can anyone direct me any closer?

I'm just a little confused why the plate on the trunk reads 350SDL, guess someone pulled a switch. I'm waiting for the title as final verification.

Since I haven't been able to locate the engine number on the engine, is there another way to verify I have the 300 and not the 350 engine?.

Looks like the only thing better than my cars ride is the assistance MB owners are willing to provide. Thanks again....