Hi guys, I'm about to start on my first build. I've got a temp. sub that has been laying around for a while that I want to use until i get some money saved up to rebuild. It's a sonly Xplod 12 (I know) it'll be running off a rockford fosgate 300.1 in a trunk. I'd like to have the tuning somewhere around 28hz-32hz.. I'm not sure how the driver will like it so i'll let you guys tell me what ya'll think. It'll be going in a 2002 Buick Regal trunk. The demensions are: W=45", L=45", H=21.5". Those are the max demensions. If you guys need any more information just feel free to ask. The subwoofer model is: XS-L120P5W