Conquest of the Horde

I was hoping, either, a new item could be made, or the display ID on a current one could be altered. Purely for appearance purposes. And it is not a change on the current item's look, it will have the same skin, but a different model, if you understand what I mean.

Switching out the more bulky

Clockwork Legplates: 45248



and

Sabatons of Lifeless Night: 45599



For their more slender counterparts, as seen on this death knight NPC.