6'7 320 pounds is kinda big for 17 years old.
Agreed! Several years ago OG Eric Steinbach of the Browns was lamented to be the last of the remaining under 300 pound offensive lineman then left in the NFL. Nowadays, at least for the FBS teams it seems that INCOMING FRESHMEN are 300 plus pounds! Just amazing. I have to wonder about the long term health effects of that.
I'm amazed at high school linemen's sizes sometimes. This isn't always the case, but some small school high schools even have huge lines. Wynford, which always is in the playoffs, missed Division VII (smallest) by 1 boy. It has a line that goes 6-7, 315; 5-9, 245; 6-5, 270; 5-8, 215; and 6-2, 340.