I just bought a camaro that is stock audio with bose system except has Z828 head unit. Im lookin to put in a 12 " sub and new door speakers.(also i have took the cover off the bucket speakers and there isnt anything there, just a tar like cover). Did my 94' Z-28 not come with rear speekers? It still has a bose sub box thing on the passenger side. What would i need to do to incorporate new speakers, a 12" sub and an AMP into my system?

P.S. I would like to hide my sub box.

 

Any Ideas on my system would help greatly?