I'm with the aerodynamic kitteh. Your cap may be suboptimal aerodynamically, but it looks sturdy and practical, and there a lot of virtue in those two words.
I had a wedge cap for years and it wasn't movable. That's why I don't still have it.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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