Saw the same thing on HorsePower TV. Unit is made by Eaton I think and was a piece of cake. Only took about 10 minutes of TV time. Remove your spiders, stuff this little gem in and you have a posi. You don't have to remove or re align anything else. Replace the cover, add oil, add posi lube and go make twin stripes on the tarmac. They did the conversion into a 66 or 67 Chevy wagon.