Hope they have someone skilled in modifications. Not sure about the two bros exhaust but I looked at and F6B and a Valkyrie at my local dealer and the exhaust hanger mounts are in different locations.
This is why 6-8"s has to come off the front of the Cobras

if not I would have a set on my Christmas list for my Valkyrie.
Guess I could always fabricate a bracket to extend our mount to meet the tab on the Cobras.