Heads are the same, cams are slightly different profiles but interchangeable. The cam bearings are the only part numer difference but from what I have seen and experimented with, the bearings are the same. The main noticeable difference is in the rocker arms. The setup the raptor uses is lighter and more efficient then the warrior which will have a more snappy effect on performance. Also the carb is a slight upgrade but honestly if your going through the hassle of swapping carbs you may as well upgrade to a ltz carb, vm, fcr or edle.