I have not actually paid for it the dealer will add the parts I have ordered to the sticker price as a dealer installed option.
But meanwhile I am paying the dealer twice a month toward the car and now have almost 21,000.00 down on the car so they don't mind ordering the parts and holding them for me till the car arrives
but here is what the dealer site says
Part Number: 92213214
Your Price $1,029.00
with Installation $1,114.00
Factory Upgrade, Audio System Subwoofer
Take your Camaro's technology to a higher level with an upgraded Audio System-Subwoofer. This system adds two 10-inch subs and a matched 200 watt amplifier to your Camaro in a custom, sealed enclosure. The system is tuned to enhance the factory GM sound system, adding low, clean sounding bass for true quality music reproduction. It's like putting surround sound in your Camaro
re: your question about the subwoofer.
I do not have the car yet so it is not hooked up, the dealer will be doing the install and they have not done any Camaros yet because mine will the the first for them.
I don't know how the dealer was able to get mine but I ordered it back when I ordered the car in July and it just showed up to the parts dept.
My understanding is the Camaro is pre-wired in the trunk for the subwoofer hookup.
I wish I could provide more answers but just dont have all the details just yet I will keep you posted as soon as the car delivers (maybe December I hope)