I'm sure you could, with some fabing...I have no first hand experience with it. I think someone was talking about doing it on one of the other forums. I don't remember what ever came of it. I will do some searching though and post what I find.
well I wanted to do this and after talking with a GM body shop, there are quite a few mods that would need to happen. The bumper on an SS is for a 1/2 ton and apparently the brackets are different, ant if you have them, you will loose the tow hooks and fog lights, both of which things i will not give up. I just couldn't make it worth it... i think that it looks sweet, but unless you change both front and back, take off your door moldings and change your grille, it still looks out of place... thats a lot of work to loose chrome
Here's an SS conversion I did on my 2500 Quadrasteer. If you do a conversion on the 2500HD you need a smaller upper bumper pad and need to change the bumper brackets to fill the larger gap the HD has - or you can just get some longer bolts and stack up a bunch of washers at each bracket.