Nothing is needed for the 4 doors running front and mid panels, rock solid. I live in a wind hole known as Nebraska and run that way in the summers when I go on longer trips and don't want to put the back on. I have to take highways to get anywhere so plenty of miles at highway/interstate speeds. Heavy cross winds, tail winds, head winds absolutely no movement. Heavy winds plus 50,000 pound cattle trucks head on traveling state highway, no issues. The hood looks like it will fly off but the roof is solid as can be.
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