For the money, the best upgrade is to swap that old pebble-grain tupperware M7 handle for one of the newer SPS-looking tupperware M7 handles. Might take some looking, but they are bound to be out there. The new stocks are about 8-10 ounces lighter, which greatly improves balance. My buddy has one of the new ones in 7mm-08 and it handles way better than the old ones.
