How hard was it to remove the old trim and re-install the new trim?
Fronts are a little tougher than the backs...need to loosen the mirror bolts from the inside (behind tweeter cover) and a small retaining screw at the back but that's about the extent of the difficulty. They have little plastic hooks that just need to be "unlatched" and then it just lifts/slides back.
There's a couple YT videos on it.