The torsion bars for the trunk only give you about 16" h when u have the trunk open. Depending on how much of the trunk ur gonna sacrifice, u could fit 2 SX's sealed and have a little trunk left. You have like 17-18" b4 u come past the rear deck, and about 25" from there to the back of the car. I'm going to b attempting 2 15" Avalanches soon, ported. If you built the enclosure inside the trunk you could probably get a lot more usuable space, it has a weird shape.
