[chitowndad]

Try replacing the door subs with JL Audio or something else that's 6.5 inch subs. There is a link on this site for DYI speaker door replacement. I also went with a cheap 4 channel amp where 1/2 of the amp drives the door subs and allows me to fine tune the sound - I'm able to get some serious sound out of my JL Audio 6.5 door subs.

Good luck.
-Steve