Originally Posted by Spood
I haven't looked at the size of the actual battery tray...I know the stock battery is pretty small...am I limited to that size?
Yah, Like Honura said, you are limited unless you want to run cables to somewhere else, but then you run into voltage drop and wire size, mounting points, etc. The battery should be close to the same physical size as the original. Any wider or longer and it won't fit into the tray. Any taller and it will hit the hood once, make some cool sparks and ruin your whole day.