I purchased the manifold from jpc they had a spare one there, I used this manifold with my last turbo setup which was on for 2 years and i have never had a problem with it. Only had the 3540 on for less than 3 weeks, and was running fine. Spent alot on the wastegate and no expense spared on my engine and turbo setup. I will let you know later on tomorrow if i dont sell the whole kit and we will work something out. cheers