So I'm going to be buying some headers and a 2.5" test pipe soon and I don't know which one is better? I don't mind the way either of them look, both are alright to me but how good are the ceramic headers? Are they made of ceramic or just coated and if they're coated is the coating that strong? Thanks for any response, they will be from ebay . All of them are 4-2-1 tho but they're only like $60 shipped! I would think 4-1 would flow better but o well.