Oh that friend is me! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif The box that holds my Audioque SDC2.5 (DVC 4ohm 600w rms) is actually tuned to...hmm actually I'm not sure...I bought it prefab...but it's got 1.6 cu ft of volume I believe and it's actually a pretty skinny port but it gets pretty loud - just not outside the car though, the most you hear is a little bit of rattling and stuff, but it doesn't shake the earth (yet) unfortunately...I've got it running on an Alpine MRP-M500 amp (500w x 1 rms @ 2 ohms). But it sounds pretty good, I must admit, I know it could be so much louder if I built my own box but I just don't have the time to do it. All right...so for some advice, I would go with basically what everyone else has said and get one/some Alpine Type Rs, Rockford Fosgate P1s, or if you are willing to pay a LITTLE bit extra to get a bigger bang for your buck, I would honestly just go ahead and get an Audioque SDC2.5 D4 10". They're $129 on their website but if you look around the forums here, there's a good chance that someone is probably selling one.