Adding new amp / subs to 04 GT

Hi All. I am adding and amp and subs to a friends 04 Grand Prix GT. I haven't seen these new ones yet. I have done this type of installation before, just not on the 04. Is there anything I should be aware of??? I assume the factory CD (no tape) has preouts - is this correct.
Thanks all.

The factory deck dose NOT have put puts onit you have to run a LOC (Line Output Convetrer) then you can run the factory deck with amp and subs.