Quote Originally Posted by Enclavean View Post
My guess is that the person who use the impure world resurrection jutsu can chose what point from their life his summons are.

Notice how all the kages kabuto summoned are in their youths? And not old men.
That makes me believe that summoner would chose the time they are the strongest. (in their 20-30's?)
Nah they are all the same age they where when they died. Very few ninja live to as ripe an old age as guys like Danzo or the Third Hokage did.