CAN I REPLACE THE STOCK MONSOON SPEAKERS AND GET BETTER SOUND?
You can but they may not sound their best. The woofers in the Monsoon setup are all 2ohms (Firebird subs have dual 4ohm voice coils that are run in parallel as a 2ohm load). Replacing the factory 2ohm woofers with 4ohm woofers, the industry standard, will cause you to lose about half of the available power and really isn’t recommended.