what 8's work well in free air?

[masterxela]

I have a 98 bmw m3. The "factory" sub location is between the rear seats, and uses the trunk as the enclosure.

Mine didn't come with the sub from the factory, so it is a hole.

What subs could I drop in there?

Thanks

[ThomasW]

Good question and why don't you ask it on a car audio forum?