Are you worried about it's appearance or structural integrity? If the LCA pivot tubes aren't damaged, and the car held a wheel alignment, I can't see why a new K frame would be needed. I would remove it, clean it up, touch up all the factory welds, and fashion a skid plate from plate steel. I think the Car Farmer web site had some skid plates for sale at one time but they are not in business, but it would give some ideas of what to fab up.