I'm not sure which is which on those as you ask, but the answers should be in the instructions. I haven't done that kit since 1998, but I can say that TransGo makes the most precise instructions of anyone.
If you take your time and read the instructions very slow, I think it should be clear what to do. There should be a picture of the drills in the instructions, and that will be made to scale so you can verify which drill to use. You only need those that are in the kit. With the springs it is possible depending on your model that not all of those are needed. Just reread them carefully, and you can figure it out. There is also a tech line phone number that should work if needed. Good luck and take your time, use a 1/4" torque wrench to tighten the bolts.