can anyone recommend some web sites so I can compare either superchargers or turbos and see who actually makes them and how much they cost v. power and quality they make??? Thanks a lot

 

Yeah... not gonna happen. Search supercharger on here then type the manufacturers names you find into google. Prepare to invest 10k+ into a s/c for the w210 with install.

 

There are some custom turbo threads going on now, look around this forum. There's a company, STS (Squires Turbo), that makes a kit. It would require a lot of modification, since it's a generic kit.

You can also look for a used HPS or Kleemann supercharger. There are no good vendor websites, so you'll mostly need to call people.