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truck cap aero
Fall/winter kind of force me to use a truck cap. I currently have a lightweight aluminum cap that has ladder racks on top built into the framework. I lose 3-4 mpg with it on. If I were to switch to a high rise fiberglass cap would it help mpg over the aluminum? I'd like one that slopes up to about a foot higher than the cab at the rear. these are usually smooth slopes where as my ladder rack sticks 2" above the cab and is a vertical flat surface. Well actually 2,a front and a rear.
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