You might give these guys a try! Did a great job on a bad odo in a 91 300E I had!

Smokie

http://speedometer.com/

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95 E420 BigBlue
500E Sway bars
2001 C Class 16 in. Rims
KYB Struts and shocks
Rear spoiler
American Stitches Wheel
Bigred 99 F250 Powerstroke
JVC EXAD Mp3 player
JVC EXAD GPS