I'm thinking about buying a used edge ez just to hold me over until the Quad Adrenaline is finished and I can afford one. Will my stock clutch be ok with one of these? What kind of mileage gains do most guys see from these? I put a SO pump on my truck with plans of ending up around 550hp someday, and I'm having a hard time dealing with the drop in power right now since I'm still stock. I'm looking at this mainly for the little extra boost and power and fuel mileage. I've been seeing them on ebay for around $150...is that a descent price? I'll probably sell it once I get the quad module. Also, do they come with a boost elbow, and do they do boost fooling?