there is a bushing that comes with the seal kit, but i dont know how to get the old one out, it looks like a small diameter exhaust tubing about 2" long, and the driveshaft yoke is about 3" away from the tailshaft. it is a 2 piece driveshaft with the carrier bearing and axle in the stock locations, the driveshaft is about 2 or 3 degrees from the carrier to the rear axle.