If you have blown your rear subs (or they have deteriorated due to age like mine) and are looking for a solution to keep your subs as OEM as possible, check out The Speaker Exchange in Tampa. They repair them for $40 each. If you have experience reconing a speaker, you can buy the recone/refoam kits for as little as $7. I just had to share this find since dual voice coil speakers are almost impossible to come across for our cars.

Here is their website:
Speaker Exchange | Your stop for all things speakerSpeaker Exchange