That's a good guide you linked there rich that guy
seems to know what he's talking about

Making up the adaptors or buying them from Kufatec is the difficult bit if you aren't using the auto-leveling system, you just then swap the lights and insert the adapters job done.
It only becomes a bit mpre difficult if you fit the auto leveling system but you can use the sensors off the V5 and Kufatec do a loom to connect everything up

Personally I haven't bothered with auto leveling - I just use the dash adjustment wheel if I need to.