My TTI's fit perfect. I bought them with no coating as they come in the nickel coating. They have been on my car for 5 years and they are turning color a little. I could have got them coated from TTI but it was about $100 dollars more as I paid $691 to get them in just the nickel coating which is the cheapest way to buy them. They are still holding up fine and are the best fitting headers I have ever used. If I had bought them ceramic coated it would have been $791 and they would most likely still looked like new. I have no complaints as I knew the nickle coating is not as good as ceramic coating but they still look fine for me. Ron