Just be careful when upgrading. Many people haven't b/c of the stupid location of the alternator. It's down low on the engine, and prone to getting muddy and dying. I can name at least 6 NJAX people who've had theirs replaced. (some people will say it's because of bad driving. Sometimes, it's just from washing the engine. It doesn't matter) And the guy you're looking for who has the dual batteries is Vikram. He's in MAXC.