It's possible but I'ver never been a fan of IB really. However, the only IB sub I've ever heard was a 15" in the back of a Civic, so I guess I shouldn't give that too much thought.
Don't forget the JL 8W7 if you have a tad more room to work with. Just hooked one up to 500 watts and I was blown away! Seriously you would think it's a 12 back there!
Sundown E8's are my answer. My 2 on a POS 4 channel did a 131.8 official and 133 DQed run. Easily will do 138 i think when i get my SAE-1200 back and put all 3 back in there.