Does anyone know if there is a pulley that will bolt to the puller bolt pattern on the 200 dampner, I have bought the power bond dampner from Mike and am starting to gather parts to run an m90 and am having a hard time finding a pulley, preferably a 6 or 8 rib serpentine, I have my old dampner and have thought about running a precise shaft threw both the old and new dampner and welding them together and burning the center out of the old dampner for two extra v belts, anything from 5.5 to 7 inches will work with all the different pulleys you can buy for the blower itself to get the right ratio for about 8 -10 psi. I will also ship it to someone with the talent to make something work. The correct size I believe is 6.870.