I installed a pair of Q-Logic kick panels in my 2002 Cavalier.

Good points:
The color match is dead on.

Bad points:
I think it is kind of a poor construction design; thin and flimsy. Also there is no back to them. I did not like the fact that I had to cut my factory sill plant to install them. If you going to put 6.5" in them...don't. I just got a new pair of 6.5" MB Quart comps and had to trim the outer edge of the speaker to fit it in the hole. The grills you get with them are also very thin and don't like to stay in. They also break very easily.

Over all:
The worst $150 I have ever spent.

I think I'm going to try to make some fiberglass one. Just need to get new sill plates now.