Brought my 6.0 powerstroke to Dark Horse Deisel for new up pipes/manifolds and wasn't disappointed. My manifolds were rusted out and leaking so bad the bolts looked fused to the engine. Sandy replaced everything it needed, truck was done earlier then expected and saved me hundreds of dollars and a nightmare job I wasn't looking forward to doing myself. Before he did the work, I was being robbed of some much power that when I drove it home, I thought a performance tune was on it. Integrity and knowledge of this shop and owners really is unmatched.