The grey set
the vendor in dal i found sells the red set but I want the nice black/grey set
Going to assume that the “grey” set you’re looking for is the Alliance version of that particular PvP set. Which you won’t have access to on Horde characters.
Closest you’ll be able to get are the Mythic or Heroic versions from Tomb of Sargeras:
That raid is soloable up to at least Heroic with current gear levels (460+ iLvL), but I haven’t tried Mythic on any character yet, so I can’t say how feasible that would be.
Alliance version 
Damn thanks for letting me know!!!
Spend the whole day trying to figure out why I couldnt find it