To have pods on the 32 doors you would more than likely have to be fairly handy with the glass. If you or someone you know is handy with fibreglass grab a spare set of door trims from the wreckers and be creative!
If you don't want to go to that extent and are really only after better sound, some decent sound deadener on the doors, focusing around the speaker area will greatly improve sound. You could also try making up a bit of MDF to mount the speaker on to get rid of some resonance as well. In the end its just another case of the more time and effort you put in the better the end result!