Elaborate your ICE setup again like amps, speakers, X-Over & EQ still within your car. What happen remove woofer-box? no place for luggage or need to put in a baby pram/stroller as priorities have changed?

If your amps are 4-channel ones than you can re-configure it to run at a different setup to optimise your remaining hardware, if not just make sure none of those wires you've dismantled are naked or not taped up.