I did a lot of research on what woofers to use. If you want a 8" sub that should fit in the factory spot then check out the Earthquake SWS subwoofer. I don't have them, but it looked like a good option. That is going to depend on where you do the high pass for the crossover at though too. I am not sure I would want to go over about 150hz with these. The nice thing is that they come in a 2 ohm version too, I think you could drop these in as a direct replacement and not even change the amp. You would need to verify the stock ohm rating for the 8" to make sure.