I obviously have my own opinion. But, that 6' 160lbs, is off the dead kids drivers license. That's how they knew who he was. He could have grown from when he was issued that card.
From 6’0”/160# to 6’3”/200# is a big growth spurt and weight gain in one year. The earliest the kid could have gotten his driver’s license was a year ago, at the age of 16.