| Rebuilding these units are easy as pie. Cost to rebuild the ball drive is about $300 bucks. I'm not too farmiliar with the Sn9X series, but they are similar to the Sn2000's. To split the case, there are 5 or 6 hex bolts. You need to remove the back plate which has 13 small hex bolts, then remove the impeller...it's held on by a 12pt nut. Then remove the 6 hex bolts on the front and lift the face off. The sn2000's are simpler that the sn9x series, but they all are pretty easy to rebuild. Go to the supercharger help link supplied above and you will find all your looking for. | 
