Really, what size box would you recommend. Should i go with the largest they recommend or something a little smaller. This is going in a Ranger so i do have to worrie about size alittle bit, it is an extend cab. So you don't think adding a second would be good for these subs?

 

Yeah, I'd do the largest recommended...which may be hard in a truck. Overpowering them with a larger amp might not be such a great idea though, especially in a larger box being the sub will be moving more (more prone to blowing).

 

so an extra amp would be over powering the subs. And what size boes do they make for tens, already manufactured.

 

Considering those subs recommend 450w rms and that amp claims to put out 800w rms, yeah, I'd say it'd be overpowering. As far as box sizes, they're different everywhere. Your best bet would be to build (or have built) a custom box so that a) it's the exact volume you want for the sub and b) it fits into your vehicle better. Largest recommended sealed box for those subs is 1.25 cubic feet per sub...so I'd try to get as close to that number as possible.