Sound damping the front doors will help tighten the front midbass as well w/o having to build an enclosure.

Many car midranges/midbasses are designed to play in an infinite baffle/free air setup, like a car door.

1998 Contour SVT #1007 -------------------------------------- Image Dynamics/Morel/Phoenix Gold/JL Audio/Eclipse/Alumapro The continuing quest for audio perfection...