86yota 10+ year member
CarAudio.com Elite
For a Mercury Grand Marquis, box will sit on the little steps in the trunk, and go into the sunken area. Box will be short enough to let the air get into the cabin.
Current box, not too much room for air flow, and all subs not firing the same way.
Think it should be a difference? Gonna tune to around 35hz. Shootin for 7-8 cubes.