Need help with Rotor hub
 

Hi, I bought a truck from a young kid who raised it up and changed out the GMC 1500 axles to 1978 F250 4x4 axles. I bought ball joints and pads for that year and they fit. The rotors seem clean and freshly ground, but I still would like to put all new. If anyone can help me to identify the year or part number I would be very grateful. Pic attached below. Now when I search 1978 F250 4x4 rotor, I find one almost identical, but it has a locker that is not bolted but shoved in it would appear. Any help with this would be awesome
https://cimg5.ibsrv.net/gimg/www.for...3523c973a1.jpg
https://cimg7.ibsrv.net/gimg/www.for...ed5b26880d.jpg
https://cimg9.ibsrv.net/gimg/www.for...f65911e6f6.jpg