I did it with the front bumper off, because I was doing a fenderwell intake at the same time.

Parts List:

1 lower fluid tank (98+)
1 level sensor (98+)
1 upper spout (98+)

You can reuse the wiper pump, but I had to cut some tape on the wiring harness to get enough wire to reach. (no cutting wires required, just tape)
People have done this, search on clubgp for it. It just bolts up to existing holes (well 2 out of 3 anyway, I only used 2 and it holds fine.)

email me if you have any other questions.
Steve