Dean,
I believe all the big MB tuners make superchargers for the 112 and 113 engines (Renntech, Brabus, Lorinser) Also STILLEN has hopped on the wagon with their own version. I remember seeing a spread in a mag where 4 ML's were pumped up and compared (Body kits, brakes, wheels, superchgrs, etc). Renntech came out on top (speed and power and price), Lorinser I think was last. STILLEN was the least expensive of the bunch. They even offer tuning for the CLKs. Good Luck.
Bill
91 300E