If its going in the trunk any sub you pick will fit! I have the 15" MMATS JUGGERNAUT. thing needs 4.5 cubes just to breath, but for subs you might want to look at DHD or JL or an ADIRE AUDIO brahma those should be good for SQ
YOu dont have to take up the whole trunk My Fiancee works for a stereo shop and he fiberglassed the spare tire well in my car for a single 12 and when finished the whole thing box and and spaced for the Mirror and stuff wont be any taller than about a quater inch higher than the lowest spot on the package tray at the back
Hey if your looking for crystal clea audio, while still having thump in the trunk, then you need to look into getting eclipse anything. My friend put in a 500 series eclipse head unit, a titanium sub and 1000 watt amp. I have never heard anything sound as clear as that. Just thought I would give you the heads up
the top of the line Alpine's (9813 and 9815) have a ton of filters and settings you can change for great overall sound quality. As for components, Diamond, Boston Acoustics and Eclipse have some decent components. You're going to want to get a 4 channel amp with low THD, also.
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