Full manual valve body install .

Just the filter and pan.
Once the knob on the end of the park rod goes through the opening it will make a kinda nasty sound like it pushed something and then free up.

That means it's in.
Don't be real gentle about it or it won't go (it has to push the lever out of it's way to go in)
Like I said before though, sometimes you have to turn the driveline at the same time to get it to go in.