There are a few discussions on this in the thread
HERE as well as a couple linked from the MSruns.com site, under the Daimler category.
Personally, I ended up removing the throttle position switch that was on my throttle body, and building a couple of adapters to let me use a Ford TPS from a Mustang/Thunderbird/etc.. Any of their 4.6/5.0 motors seem to use the same sensor, and they're a dime a dozen in the salvage yards, as well as easily available from parts channels.
The one Bosch direct bolt on sensor was discontinued in the early '90s from what one of the discussions I saw was claiming.