a beauty of the IDQ woofers.. TINY sealed box space needed and great sound with some impact. I put a single 10" IDQ in a .5 sealed box in a friends acura CL and it was more than enough. Also, they don't need much power too. Consider what your budget it all together, because when you're looking at nothing but 900+ rms amps and such.. you're asking for a charging system upgrade as well. Extra power's always nice, but for daily driving purposes... you don't even need that much at all. You'd be surprised how little power you actually use in a daily listening format.