I just went through this last weekend and the only battery i could find was an Autozone battery that was for the Spark. They only have one kind and it is stamped right on it made in South Korea. Its only 400 cranking amps and only comes with a two year warranty but I didn't have time to jack around trying to see if there was anything else that might fit in the tray. I do know that the way it mounts that you would have to come up with a different top bracket to hold it in place if it wasn't the exact same measurement front to back.
