Brand new in the box with hardware and instructions never used , great quality can use it with the stock exhaust or with headers, utilizes the heat from exhaust for better performance. Bought it a month ago and I have since decided to go another direction. Fits Ford A & B motors 4 banger speed parts, Ansen, Burns, Zephyr, Snyder. Direct from Secrets of Speed Charlie Yapp. Send email to [email protected]