If your manual states the rated power is 162kW, this translates loosely into 220 hp....very similar to the 217hp quoted for the U.S. I don't believe MB made any 240hp M104 motors for the 300CE. At least I couldn't find any in the CD-ROM for the W124.
AMG did produce a 3.4 liter variation of this motor rated at 200Kw @6500 rpm. This translates to roughly 272hp.
Hope this helps! Enjoy your ride