Dave, I didn't mean to put you in a difficult situation by asking that question. I have an '04 305/555 Quad-cab, SB, 4x4 and I'm just looking for all ideas to make this truck get better mpg. So far, the electronics that I've researched will give lots of TQ and HP, but not fuel mileage increases. As for aerodynamics...there's a few suggestions out there but aero-body kits don't appear to be in big demand by RAM owners. I watch Cumminsforums, and others. While there are some wild claims there's no solid, independent, testing behind the claims. Thanks for responding though. -Ed
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