No clue. Honestly, if I (for some odd reason) kept the Monsoon system in that situation, I'd source out a 6x9 component set. Either that, or just grab some 6x9s and a set of tweeters. If you don't mind running some wire, it'd be a good chance to play with placing additional tweets up front, if that's your thing.
Edit: Broham... GET THESE Audio Savings | Pair Cadence CVLW69 6x9 Competition Mid-Bass Driver Car Audio Midrange Speakers
Add some tweets of your choice, and you should be able to knock the stock Monsoon stuff out of the water (depending on impendances.... not sure what Monsoon runs at).
