Cool vid, I did exactly what you showed last year on my car when I did my BMR K member install. I unfortunately had to replace the top splitter also since it was also damaged a few years ago so I removed all of it to replace that and the bottom splitter.
I see you are using your QJ with the frame extensions and in your video did I hear you say your car is lowered? I was wondering if you have problems getting the QJ under your car with the extensions when you go to lift it?
My car is stock height and with extensions it doesn't fit under my car I have to drive the front on my homemade ramps to give me enough room under the sides to slide the QJ in to lift the car.