Hi All. Just thought I would share my install info if anyone else has an interest in the MP Concepts louvers for their Challenger. I went with a matte black to match the blackouts on my 2017 Challenger T/A. I found the fit of the louvers was over all, very good. Following instructions, I used the provided adhesive promoter on the metal mounting tabs and attached the double stick tape. I then sat the lovers on the window, making sure I lined up the top edge so there was no glass showing. That left a slight gap at the bottom, which was good as it provided clearance for the trunk. I eyeballed where the pads were going to land and put some adhesive promoter on the glass. Then I stuck the lover in place. After things were set, I unscrewed the louvers from mounting plates, pressed the plates down firmly, then left the car sit in the sun for a couple of hours. I then remounted the louvers. The install calls for foam blocks to be placed down the center of the louvers but I found I could see the blocks when they were in place(see photos), which I hated. So I beveled the back edge at a 45 degree angle and put them in place. They are damn near invisible now. Over all, I am very happy with this unit. I hope this post assists others who may install MP Concepts louvers the their cars in the future.