As I recall, the adjustable levers are/were for the 1800 Wing but will work on the Valk with a small modification. Part of a tab has to be removed in the area of the clutch switch or the plunger, forget just now but it's a simple fix.
Correct re: fitment.
I have them on both of my Valkyries and will take a look at what I did (it's been several years).
One thing you have to check is the thickness of the boss which holds the bronze bushing for the pivot bolt, as well as the length of the bushing itself. Mine required a slight amount of planing with a fine grit oilstone before it would fit the Valkyrie master cylinders without binding.