Yes, I paid $300 for mine they are pitted , not the best but it was ten years ago when I bought them. I painted them with cast blast . Don't forget about the heat riser valve that sticks on the passenger side. I was advised to "remove " it by cutting the shaft. I had a problem with headers bottoming out on the passenger side. They do have good headers out there, but they are expensive. Heat is an issue with headers also. I wanted to get the car back to "close" to original anyway so I opted for manifolds Mainly to get the exhaust up tight to the underside of the car. As far as schooling, the manifolds are 340 specific, they are designed to be high flow so don't think they will restrict performance. The 318-360 manifolds may not be as open as far as flow.
