I know that Renntech has some different modifications available for the 103 engine. I remember seeing a 190 2.6 with a Renntech 3.6 liter stroker conversion at the track a couple of years ago.
I think their website it
http://www.renntechmercedes.com
You can get info on supercharging from Vortec, Powerdyne,and maybe Paxton. All of these companies offer centrifugal superchargers for various applications. I;m shure that a good tech/fabricator could make an appropriate mounting bracket and set up a custom system. Of course mods like this are not cheap, but they can be done.
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