Yes, to prevent scraping. I have it under the bottom of the front section that is a bit lower then the rest of the front. You can see it in the picture. The part that goes all around the front. I also put some on the back side of the skirts (underneath), as that is a scrape prone zone as well,l from what I have heard. I made them myself. Traced them in Cardboard and then took them to a metal shop and asked them to cut them from an aluminum sheet. The body shop wil attach them with 3M tape. They said it will hold well.
Or you can have Fly1 make you a set, but it will be more money.
Fly1 Motorsports Custom Skid Plates / Splitters