There was one of these put on an old Benz diesel and somebody brought it up in the Mercedesshop.com forum I am a member at. It was listed on ebay, if you search through the completed listings you might be able to find it. I think they were boasting 61mpg or something crazy.
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2003 Dodge Ram 2500 4X4, PDR Cobra Stage 2 Twins, BD Power 90's, Studs, Springs, Autometers, Dual 7" Black Stacks/rain caps, Banks intercooler, Goerend Full Built Trans, Smarty set to Kill, MP-8, Full DIY CP3 Mod, Rail capped
, FASS 150/150, and big line kit.