I'm looking to replace my Interstate YTS15L-BS. This was the battery that came with the bike (2000 Sport) when I got it, haven't been wildly impressed. I've seen some threads here recommending the Odyssey PC545 but it looked like I would have to modify the battery box if I'm not mistaken. There are also probably some new better then ever designs with excellent cranking power, charge holding, etc. Anybody got any recommendations on a good drop in?