I had one put on 3 weeks ago. It doesn't do much for the cleanliness of the back window but it looks kind of cool-a little different. Mine was $375 installed at Cerritos Hummer. I don't have time to install it so they did it with the 1st oil change. They only used 2 bolts on mine and the stick tape. Problem is they used steel bolts. I plan to change them out to stainless and gooo them with a sealant to avoid rust when I get a second or two. They sit outside the rubber seal. I thought about white primer with a brush and still may go that way not sure. Spoiler looks good but I don't think it does much though. The ones on the trucks that stick up in the airflow and redirect some down over the window will create a "Breeze" to "help" keep the window cleaner, but I haven't seen one of those yet. With that big spare back there blocking the view, I never use the center mirror anyway, always the sides.
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