how to install a universal joint how to DIY 68-72 chevelle GM a body 1310

car is a 70 chevelle 2 door hard top drive shaft is a factory muncie 4 speed measuring 55.5" from center of u joint to center of u joint.... WILL be the same for TH350 and borg warner t10 and super t10 ive never owned a TH400 so i dont know just an idea on how i replaced the u joints.... i have a press and any tool options necessary but this is the most practical way ive found to do this... ask me any questions and thanks for watching...