Im looking for the best fit for the audio system in my car. Ok here we go im going to try to give all the info about it i can think of. The amp is a AQ 2200D pushing two AQ 12s street duty in a a 4.5 cu. ft slot ported box, built by the great Bassman.The front 6 and a halfs are not much to speak of they are alpines but i cant remember the specs. I have a jensen uv7i HU now, i took that out because i found a new KDC-MP238/CR and i knew it wasnt going to be great but man its just not enough.And for the new HU I would like a usb port in front or back and a AUX port to connect an ipod or what not and good output for what i have. Thanks in advance for the help. if you need more info let me know.