Your solution for the parking sensors is cheap and mediocre at best for $1500. The 3M tape won’t last 1 winter in Wisconsin not to mention the salt and water. I’d rather pay $20 more to have OEM style retainers and have the sensors secure then stick them on and pray they stay on or hope they are alined correctly. My bumper was around the same price as yours and it came with OEM retainers so I doubt it’s a cost issue. Also the steel is extremely thin and offers zero protection for the subframe and oil pan seems like your product is made for looks and not function which is sad at the price point you’re charging.