Got 394,000+ on my 99 with the original clutch. Have an Edge EZ and Bosch RV injectors (75 HP). Its a daily work truck in and out the woods and with tools and fuel weighs in close to 12,000 lbs. Add to that the snowplowing and pulling trailers I would say I have done good not needing a clutch til now. My question would be should I replace the flywheel as well?