well I just installed this.
The difference is quite a bit more than I was expecting.
But yeah, the installation was pretty straight forward (thanks to this thread- I knew what size torx key to buy!) For those of us with the winter package, taking off the boot is particularly easy. You just reach (your hand) through the "access hole" and push on the clip at the rear of the boot. No screwdriver lever action required.
I just felt guilty hiding the gorgeous pieces from the view. The damn aluminum spacer alone is achingly beautiful.
Ooh, ooh! Guess what I cut myself on! Give you a hint, it wasn't metal.