My 03 GT has just 17k on the OEM battery, but i think it's on its way out. (sitting with 12.1v). is it worth taking some weight off the front and buy one of those dyna or odessey batteries? Which is better/recommended? I dont want to relocate my battery because it's packed when i go to the track with my slicks and tools ect. i just installed a SQ trim with cobra fuel pumps with the wire upgrade, still have the OEM water pump. also have a Raptor shift light, boost and wideband gauges, those are all the electrical add-ons. the car see's 3k miles a year, driven maybe once a week. Or forget it and just go to Sears and get a regular OEM replacement?