I apoligize in advance. I know I'm probably asking a question that has been asked before. I'm adding a new deck that has a 6.5 in monitor, two headrest monitors, 2-12's, and a 2 channel amp rated at 350 rms at 4 ohms per channel, to my factory bose system. Do I need to upgrade the batt., add another batt., and or upgrade my alt.? I'm new to car audio but I do work with electronics, so I know that if something requires more power than something needs to give it, I just don't know how much is too much for the factory components( batt. alt.) Your help would greatly be apprieciated. Also, if an explaination could be given for the sake of knowledge.