12 bolt yoke damaged

[davidc22]

Hi everyone hate to ask this [did do a quick search] but... went to replace rear u-joint on my '71 C15 LWB and found the yoke AFU'd. Truck is new to me and the damage is from a previous u-joint failure [would have hated to see that]. Anyway axles are something I have never really got into so pardon my ignorance but... can the yoke be easily replaced or is a new crush washer have to be installed which I would be clueless about. I hate to do a temp repair setting the u-joint in JB Weld which looks like was done by a PO. Thanks for any tips/ instruction.