na thats all show no go they are capitalizing on the old name "stroker"
this is a woofer
http://www.woofersetc.com/p5787/XXX1...-Subwoofer.htm
i have them thats an amazing woofer
really you need to decide a budget and how much of an improvement are you lookign for ?
also how secure does it need to be ?
do you drive to school work or park in a parking lot where its unattended for long times
if you have a loud stereo in a very recognizable car and leave it unattended for long periods of time expect to be fixing a broken window and ripped parts like your dash wiring and box amp setup
there isnt a trunk to lock stuff into so if they break a window its gone and if you want to mount a prefab box you will have a bich of a time getting to the engine ,not that its impossible but difficult
but if you mount a small woofer under the dash like alot of ppl do its very hard to steal sounds good and takes up no space