hey Don, congrats on the louvers, I have them on my car, install wasn't bad, I opted for the screw in install, not he adhesive.
the big part about removing the center light bezel or the trunk is once you have the 4 speed nuts off, you will have to give it a good tug, don't be put off by the sounds you here, the stud clips that hold the unit in are tough, but they will give.