I am possibly thinking of putting a k551 kit on my car. I am not driving a jeep but rather an AMC Eagle but it shares the same engine. My first question is in regards to fuel economy, will it improve? This is key to me as I have a long commute to work. Also has anyone put this on an automatic? If so is the Clifford linkage worth the $40 or is it simple to fabricate? Lastly if anyone has a spare one of these linkages would they be interested in selling it?