Couple questions. I am getting ready to install dynatrac ball joints on my 2012. First question is, after reading the instructions it says I need an install kit in order to install them.. Is that true or can I install them with a normal ball joint press just like all other ball joints? Also I know I have to pull the axle shafts out in order to do the ball joints. Do I need to drain the front diff or will it be perfectly fine because I just changed the fluid a few weeks ago and would rather not mess with it unless I HAVE too. Thanks!