BreakawayOffroad4x4.com.au

Get em while they're hot. Unfortunately for me I cannot fit anything longer than 270mm under my bonnet. I know nothing about the brand or the condition.

http://www.ebay.com.au/itm/321326801988 ... 1438.l2649

The battery size appears to be :
Dimension: 407(L)×177(W)×225(H)

Its a good brand name, though I think they are somewhat older batteries. The current version of these batteries seem to have a grey case, i.e. not all black. But they may go cheap.