ok im getting a 2007 grand prix GT with the monsoon sound system next week from a friend.
my questions are
1. is it possible to hook up subs to the stock head unit?
2. could i use the monsoon amp to hook up the subs?
3. can i replace the monsoon amp and hook subs up to that one?
4. if i hook the sub to the amp, do i need to run any wires to the head unit?
thank you.