Quick Subwoofer Question
 

I've got 2 Kicker CVRs and a 1000 Watt amp to power them. However, I have a 2005 Mazda 6 that came with the Bose speakers. Is it possible to even hook my Kickers up to the stock Bose stereo?

Are you using the stock deck? Or an aftermarket deck? Either way both is entirely possible.

Still using the stock deck.

If you are still using the stock deck then wire it up the way I did in my 3. Except I think your rear speakers are in the back? Like under the window or are then in the doors?