The stock skid will work for the superlift if I recall. Where it mounts, is still fully exposed and away from the LCA drops. I know I've seen a few SL'd trucks with the stock skid still there.
Or...do what I'm gonna do....full custom that'll wrap under the SL crossmembers. The superlift skid is stupid, dumb, ugly, and way overpriced.
Here's a pic of the superlift setup down below.