Overall it did help the sound quality of the car. Those were just some extra 4 1/2 inch JBL's I had laying around, so it mainly just added to the highs. It was not too difficult to do. Just eyed it up from underneath in the trunk and copied the template. After that drilled upward to create the "pattern" on the top. Used a box cutter to cut threw the rear deck. Then aviation shears to cut threw the metal. Dropped in the speakers, hooked them up to the amp, and poof you are done. Took about an hours worth of work. If you have the speakers already and you don't want to upgrade, i say go for it. But, if you haven't already bought speakers you should invest in a good quality component speaker for the fronts and call it a day. I like it, added a little depth to the sound and it wasn't hard to do. People in the back say the highs are a little too high, but that is understandable because their heads are 5 inches away from the speakers.
