clearance is the main issue.
No problem on the passenger side, but the gas tank is just too tall on the drivers side. I researched and all I could find that would fit, maybe, are some $200 infinity 4x6 plate speakers, and you would still have to use a spacer. Next up is a subwoofer and amp and the sound might be done, except for an iPhone dock, and I might still work on some custom kick panels to let me use 5 1/4 speakers up front instead of 4" in the door.