Bobbytwonames 5,000+ posts
Trigger Man!
I don't think it does from the pics I've seen.
Years ago a friend had a civic hatchback that he had fiberglass "pods" made for the area where the armrest is in the back seats.
He put RF 8" on each side and ran them off of a punch 100 and it sounded really good.
I see the armrest area in the 91 325 vert already holds the rear speakers so it might be possible but the cost might be a little high and it would defiantly need some modification to that whole area.
In my 2001 BMW convertible we just folded down the center arm rest and cut the hole out with a sawzall. I ran a single XFL12 in the trunk in a pre-fab box for a Kicker L7 12" (new baffle piece). We aimed the sub right at the hole in the armrest. It got down pretty good. I only had an 1,100 watt lightning audio amp on the sub. If the OP wants any kind of "legitimate" bass, then, he will have to use the trunk.