If you a talking about the two spoiler clips with a nut built right into them with 4 little tabs that break off when you remove the spoiler, these two I happen to know apparently come with the spoiler. Sounds retarded, but it's true. I ended up making two. I just used a flat washer that would fit into the channel in the spoiler brackets, tack welded a nut to the top side of the washer, and appropriate bolts from the underside of the hatch into the spoiler. Worked great. Actually much stronger than the plastic ones were. Hope this is some help. If there is a Facca Fasteners in your area, they'll have most of the clips for the car.
