Thanks for everyone's help and advice on this. I did get the right seals, and u joint. I have a 231 T/C. It got rid of most of the vibration. I think the remaining vibration is tire. I just put on some 30" Falcan Rocky Mounts. Good looking tire and a great price. I drilled out the rear lower shock mount with a 5/8 bit. Added a 5/8x4" grade 8 bolt and nut and it worked perfect. Put the Rancho 5000 shocks on. Probably a little to lite duty, but I have not lifted it yet so they should work fine for now. Don't have to worry about breaking nut off again, at least on the lower mounts. Next project will be lifting it. But putting it off for a little while. Thanks again and Happy New Year to everyone!