Im not sure there is any difference? if the pedals bolt in you should be fine. Take a few pictures under your dash up at the pedals and I will compare it to the W123 and W201 pedal sets I have to see if one of them will bolt up I remember asking the guy who did an SEC diesel conversion and he used the W123 pedal set, I dont remember if he had to modify it or not.

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

The w126 has an electric speedo. That is more difficult to get working with the 4 speed 240 trans.

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1988 Toyota Camry Wagon......CRUSHED
1988 Porsche 944.......SOLD
1984 300SD.....SOLD
1995 Honda Civic DX... Totaled 11/13/08
1991 Madza Miata 193K and counting.....Mercedes t3 Turbocharger in the works 10 pounds per RWHP FTW

yeah but I am surrounded by electrical engineers at my work, so Im pretty sure I can duplicate the pickup in the trans

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)