I've done the 18 gram weights and spring and re clock to my clutch and it is a marked improvement over stock. What I'm wanting to do is locate a Dr Pulley weight kit part number . If its just metal weights than its no better than what I have already, but most of the Dr Pulley stuff I've seen comes as one piece with weights and slider all together, just not sure if that's the case on this model. looking for input and part numbers, thank you