Not sure if you have ordered already or even if you have seen this site. This is most likely where im getting mine.
http://www.gpspec.com/store/antigravity-hard-case-4cell-motorcycle-battery-12v-66ah-120cca-p-417.html
http://www.gpspec.com/store/antigravity-hard-case-4cell-motorcycle-battery-12v-66ah-120cca-p-417.html