I got the base model but I got the factory amp in the trunk. I am trying to install 2 12" subs with a 1000w amp. I have no experience installing anything but the headunit. i am currently saving for the wiring harness for the onstar and door chimes. I want to know if that is enough wattage for the amp and Ialso want to know how to install the subs and the amp. My deck is a JvC 50w x4. I would also like to know what are some good speakers for not too expensive. I am a student and I dont have millions. Thanks to anyone who helps. Thanks.