Thanks guys i got the measurement for my today and while at work i was looking around by the outdoor power equipment and found this
http://tinyurl.com/88an6jw
It looks to be able to fit i didn't get a chance to take a tape measure to it while i was at work (and since the dimensions on the site listed are wrong). But im not to fond of wanting to have to fill the battery myself (unless they are like this), i mean don't get me wrong im not to working on engines or anything just never really dealt with go karts are anything i stick more to cars.
So i think tomorrow im gonna check out the ES5LBS from walmart