These are direct bolt on driveshaft enclosures for the Rockwell 106 Rearend. Simply pull the pinion support bolts and install the cage. Slide the "can" up your driveshaft, hook up the u-joint and reinstall the can. Saving your butt has never been easier. We make these right here in Antwerp Ohio. We also make enclosures for custom applications.
You've already broken the u-joint, stop the carnage there. Keep your shaft spinning harmlessly in a circle not flailing around tearing everything in sight up.