Screws FTW, you'll have to drill holes into your bumper anyway so why not just screw into the plastic.
That's how my S204 one came from the factory like, it had clips and
screws. (screws did have little metal washers to catch the thread though)
If you're going to use the super long bolts provided, I suggest going
and buying some nylon lock nuts to secure them with as the ones
provided aren't that great.
