For $260 you can get a pioneer amp pushing 380 @4 ohms and a Fusion 12" sub that handles 450 RMS. The amp is $140 and the sub is $120. Or try to find another amp that pushes 400 watts or more RMS, such as an MTX or a Lanzar (not the best brand, but lots of power for the money). Rockford Fosgate HE2, 10" 2-ohm voice coil handles 400 RMS, perfect for the pioneer amp. My friend has this setup in his Continental and it hits nicely. And the amp is only at an 8-ohm load! (The downside of a 4-ohm dual voice coil sub).