I am starting to think with the growth of 3-4 and NT we badly need a 350LB Center/Gaurd who can swing and backup our boys . Do they even exist ? . dan koppen is very good but man you cannot put him against a NT all game who out weighs him by 30-50 lbs. a gaurd/center backup at 350 -less atheletic but bigger and stronger to rotate and used in run blocking of bigger NT will be idle.even some one who can come in and bang with a NT a few times and match him strength for strength. do they even exist. dan in such cases swing as a gaurd and set let this guy take on a nose tackle.