yes but the sweet sound of a datsun engine gets annoying after an hour on the freeway
yes throw a screwdriver through the xplod speakers and buy a couple of drivers with all their specs included (vas, Q-values, etc). Next, burn what you have already made and download
winISD , design a 4th order band-pass box with with isobaric speaker setup and a port about 30cm long. run the port from the box in the boot to the parcel shelf so it sits flush... LOUD and quality... what more do u want?
serious bang for buck... you will be pleasently suprised when your two $80 10" subs out-perform your mates 2 $150 12" pioneer or other (look at my subs... aren't they pretty) brand.
get ALL the speaker specs, put abit of precision work in and you'll be pleasently suprised
step off soap-box...