KIT-26 would fit the batteries you have installed. KIT-26 does include float switches which do require holes to be drilled in battery as described in this forum. If you do not want to drill these holes and to save some money you can order part# U5503A-N and U5504A-N instead of KIT-26. Either of these will fit the 2 9/16" hole spacing which is the hole spacing for the US batteries.
Also note the batteries in the image are missing the hold downs which require qty. 16 of U8607A-N, qty. 8 of U4520A-N, qty. 16 of U8677A-N & qty. 16 of U8606A-N.