does anybody know the specs of the DII amp that goes to the subwoofer or have any specs on the stock subwoofer? they sound like complete crap when any decent bass hits so i'm looking to replace them with a pair of the same sized subs. i know they're 6.5" and have read to get shallow speakers. just want to get a set that will match up decent with the stock amp and not be underdriven too much. my truck is an 04' SE