Regardless, I feel like the stock charging system won't be able to handle all this. It may handle the two amps for the mids and highs, since I've done that with a previous install with no issue but I've never ran three amps before. What upgrades should I need to do for this to work? Will I need a high output alternator? If so, what size and where could I get one from? Will I need another battery? If so, how do I go about installing a second battery? Again, I apologise for the long post and all the questions. I've been wanting to do an install like this for a while and have been looking long and hard for what speakers and amps I want. Now that I've decided, I'm wanting to be sure my electrical/charging system will be able to handle everything. Any advice and/or suggestions, links, etc will be greatly appreciated.