I know nothing about transmissions, but trying to learn. I have a TB 350 in a 75 K5 that needs to be rebuilt. I just ran across a four speed with granny 1st gear out of a 85 K5 that had an electrical fire yesterday. First question- this is a SM465, correct? Second, will this swap be a direct bolt in? Found the how to write up in the technical section so I will be following that closely. Just a little worried about the different tail shafts, and any other issues that might pop up I don't know about. Thanks for the help.