8.25 new trac lock posi unit 27 spline

It doesn't seems like it's the same cross pin shaft on the open carrier if you read this "ad" on ebay. http://www.ebay.com/itm/NEW-REAR-EN...m35b6e2f586:m:mDoc2Yl5yR7eHQvooLLL6oQ&vxp=mtr