On the front pic, your chest is very impressive. Arms have a good shape, and your shoulders are looking good, too! Your lats seem to have a good width as well, from the back pic! And triceps look good. It's always a little hard to tell when someone's not flexing.
I'd definitely hit the legs hard! That's the best way to strengthen the whole body!
And like I said to you before - no way in hell is that a 51 year old body!!!