To be truthful the reason for my question is because all of my stuff got ganked Wendsday night. I had the 4 10's and I am trying to get something comparable. They were hooked up to an audiobahn A1500HCT(Not looking to get the audiobahn or the rockfords again). The amount of space that have is around 5.0 cubic feet. And the amount of money that I have for the subs and amp is 800.00. The vehicle is a chevy colorado extended cab. Thanks for any info.