Alright, I am gonna wrap this up here. The seller issued me a full refund for the headers and I went ahead and bought another set (even cheaper lol) from a different seller. This time around its all sealed and good to go. My engine runs noticabely smoother compared to the original manifolds. I think there really was a Bottlenack. Thinking about replacing the flowmaster mufflers with something like a hooker max flow. Oh yeah I looked at some intakes as well as I have the spread bore with an adapter... intake manifolds are 500 to 600$ now??????? Wow.