Calzaghe has the frame to easily add 7lbs, hes a tall guy and has been dehydrating himself to make 168 for years. I remember when he fought Robin Reid in 1999 and came in 1 and a half pounds over, even then he struggled to make the 168 limit. Its hard to believe Calzaghe could get any better at 175, but i dont think he'll get any worse.