Hey everyone I'm about to get a 03 gt soon and I'd like to know what the dimensions of the battery are. Reason being I can get a nice deal on a good aftermarket one, which I'll be needing for my sound system. Also, how much modding would have to be done to fit a bigger battery in there? Thanx for the help.....

 

Why do you need an aftermarket battery??I have to JL W7s and a 1000 watt Phoniex Gold amp with a factory battery and have no problems,althou I have an higher output alternater.Just put an optima battery if anything and they are all the same size

 

Or put in a capacitor. It will hold a charge without draining your battery.