I see that it is going to be a long distance call from France, but i would call the phone number. I called him both times and he was very helpful and knows exactly what gear you need. Make sure you have counted the teeth on the gear you have before you call.
I will try to contact him about the web site needing work.
Good luck.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red