I am trying to put together the ultimate set of T60 Power Armor(because X01 can't bear BOS Sentinel paint) and I already have Exemplar's Torso, Visionary's Helm, Honor, and Vengeance.....all of which are T60 PA parts....but now I am missing Legendary arms for it. Are there any? Anyone found T60 Legendary arms?

Where did you get the Exemplar's Torso if I may ask?

If you wait to find the missing recon team until the Prydwen arrives, Lancer-Captain Kells awards your service with the Exemplar's Torso.

According to the official game guide there are no unique t-60 arm pieces, just torso, helm, and legs.

You need to persuade the dude feeding the feral ghouls during the mission "Duty or Dishonor" that he needs to turn himself in.