You can see how big the weight is here, as well as get an idea of how far out from the center this type of weight would set from the the placing of the bolt holes. The small weight is for the late 340 and bolts to the back of an otherwise balanced damper for a 318. http://professional-products.com/me...78eab33525d08d6e5fb8d27136e95/9/0/90012_1.png