I am sorry if this has been answered before but, I want to get the Kinetik HC1800 battery for my 03 GT because I need a new battery because mine currently has a bad cell. I am going to add a kicker 350.4 for my aftermarket speakers and within a few weeks I plan on adding 2 10" or 12" (havn't decided yet) Kicker CVR's + an amp. I already just put in an 130AMP HO Pa Performance alternator from AM. My question is how hard is it to modify the battery tray to fit this battery in nicely and is it possible? Has anybody here done this before so I can have an idea of what I am getting myself into? Or do you think a Optima yellowtop battery would be enough?