How to get T-51 Power Armor n Fallout 4

To obtain a set of T-51 Power Armor, head to Quincy Ruins on the southeast portion of the map.  Here, you will find a Gunner named Clint, who’s wearing or out of his armor.  Move up to the Overpass, take down the Gunner, and score a set of T-51 Power Armor. If you engage Clint in the power armor, expect a steep repair cost to get your T-51 at full strength.