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Old 07-28-2019, 02:52 PM   #11 (permalink)
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Lord Vader - '15 BMW i3 REx
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Originally Posted by hat_man View Post
I wish I knew how to place the template over a picture and move it. If you placed the template at the rear with the high point being the top of the tailgate in the up position, would the resulting shaded area be the shape of what I'm aiming for?

Or something like this........
Seems about right to me.

My understanding is that the primary benefit is less about having a cavity than conforming to the general shape of that curve for the rear most trailing edges. So if the bed extender falls in that area, just closing off the top and sides of it while extended would likely provide measurable benefit without having to extend it further, though every little bit often helps.

2015 BMW i3 REx
2011 Ford Flex SEL AWD
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