Cruisinketch

I was looking into getting a Kinetik's battery to replace my OEM battery since I'm about to do an upgraded audio installation. I'm about to add 1,500 watts in RMS audio equipment. Kinetik's website tells me I need a BC1400 or higher. I wanted to get something bigger to give myself room to grow. But no where on any sites tell me what size battery will fit our engine bays. Has any body else installed a Kinetik's battery under the hood? If so could you be kind enough to list what size and your experience with it thus far?

Thanks in advance guys!