06 Vmax injector cleaning

What parts do I need to change when reinstalling the injectors on a 225 Vmax? How many of each? The gasket # 34 lists 12 needed, 2 for each injector. The Oring lists 1 needed? Is that 1 kit that contains 6 Orings, or do I need to order 6 Oring kits?

[boats.net]

The oring kit is for 1 injector, order 6.