I saw one on this same truck in Az last winter. He was from Canada and it was a real nice looking alum one. I have the same truck as yours. I only have 8k on mine but get about 15 driving empty and 10 pulling my 18.5 k fifth wheel. I hope it improves. I keep hearing all this DPF deletes and all but I'm not risking loosing my warranty so she stays stock.