I've got a single 10 in a closed box. Works great! If I were to add an amp for my door speakers I would probably move to a ported box, but still keep the 10.
So I took my subs out today, stereo is fine with out them as long as you're not blasting hip hop. Then it sounds kinda cheezy. Hoping to get a 10" after I sell my 2x12"
And now pictures for pictures sake!
mmmmmm horns
So I took out the subs and got trunk space...
And then immediately turned my car into a moving van.
I forgot how much crap you can get back there.... I feel liberated!
Single 10" could do the whole thing nicely, but its all about your install.
What kinda power are you putting into it? have you ever fibre glassed before?
I'd go for the W3 from JL if possible. Or a polk MM 10" http://www.sonicelectronix.com/item_14755_Polk-Audio-MM1040.html
I'm getting ready to do my 'glass box, gonna cut off the bracket that holds the spare tools and trim the plastic. Then glass the whole opening, should be good for around a cubic foot.