2 dc level 3 10's. vehicle: 2009 chevy silverado crew cab.max dimensions front:w56"xh13". depth 19". back w56"xh6.5. will be powered by 1000 watt amp. listen to heavy metal want it loud and deep with impact. I think loud is more important then sound quality but i want clear bass also. i want the enclosure to be vented round or slot port it does not matter whichever you deem to sound better. This box is to be designed to fit under the rear seat of the vehicle and front firing i would also prefer the tuning to be "lowish" 30-32hz. Thank you-Dave.