e46fanatics suggests using the 49DL(Duralast) and if you read all the posts you'll see it's more than an inch too long. I made the mistake of buying one and it didn't fit my battery tray by about 4mm. Perhaps in the US they have a different battery tray. The Duralast at Autozone is like going to Canadian Tire for a Motomaster battery and with gas at $1.14/L, it'll cost you almost $40 to go to Buffalo and back.
The Optima Yellow Top will require modifying your battery tray not to mention has really low cold cranking amps for the winter months(personal experience). I gave my Yellow Top away for free.
$141.60 plus tax isn't steep for an Exide 94R battery. It has 960ca and 800cca (cold cranking amps)
The choice is yours.
Last edited by M.I.G.; 04-08-2008 at 02:25 AM.