I have stocked several guns with graft wood and believe that is what is on the S&W pump. Most of it is laid out with the base wood at the butt and not as prominent as the one shown. The blank KY Jon shows is not the way I am used to seeing a graftline blank laid out.
I have grafted stocks together a few times and the only way to make them work that I have found is to cut the old stock just barely behind the pistol grip and blend them together right behind the checkering. Even then you have to start with two sympathetic profiles. The one that worked best was a highly figured Ruger No. 1 buttstock grafted on to a Beretta Companion 410 shotgun (don't ask). When the junction was smoothed and the color blended with stain and then refinished, you had to get really close to see the joint in the profiled junction.
I have never been able to buy and English gun with a wood extension and a new butt plate. They can make a nice gun useable and are often really needed to adapt a midget's prize gun the the modern world, but most of them appear to have been done during an economic depression when every penny counted. Using the second or third piece of walnut seemed to have been way too much trouble and expense.
