The Alumapro Alchemy 12" sounds really good. I love it because it is very accurate for such a loud sub. To get the full effect of the sub, you are going to have to allow the air in the trunk to connect with the air in the cabin. The easiest thing to do is to cut out the rear boxes in the package shelf and also remove the lids. You can create some very slim grilles to go over the holes with some 1/8" masonite and grille cloth. There is a place called http://www.partsexpress.com that sells all different styles and colors. If you are serious about hearing your sub, that is the only way you can do it. You could remove the rear speakers and the fiberous jute that is below them to "port" the rear shelf, but it won't work as well. Also, you can gain a lot just by moving your sub box around in the trunk. Usually, the best location is against the front of the trunk with the sub facing the rear of the trunk.