Since the NFL’s free agency period opened on March 14th, the Miami Dolphins have re-upped, revamped and retooled much of their roster with dizzying speed, and even the most ardent followers of the team may find it challenging to keep up with all the new faces in the lineup. Say what you will about the level of talent Miami has allowed to walk out the door, but give the Dolphins credit for bringing in players who appear to be capable replacements. The team’s latest moves were bringing in two veteran interior linemen, center Daniel Kilgore and offensive guard Josh Sitton.