Just had my buddy put in the replacement sub in place of the factory B&O sub. He put in a Kicker 10" and it sounds awesome. Also had him dynamat the rear deck and it helps alot with any rattling of the rear deck. I was going to go with the JL audio 10"w1, but the kicker was enough for what i was doing without going with a separate amp. Also put a thin piece of rubber along the rear brake/stoplight to stop any vibrations from the sub. Found out that it was hitting the rear window when the bass hit.