For another take on fitting a TPS, take a look around the Flickr account linked in my signature.
I just posted a few pics of the adapter plate I just worked out to fit an easily available Ford TPS to one of our throttle bodies. 1/8" aluminum plate, ~1/2" brass rod as a pivot shaft, and a few screws to fasten it all together. Cost me under $10 in material, and uses an easily available sensor that retails ~$50, rather than the no longer available MB sensor that was $90.

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...