I'm listing this for a friend who is selling some parts he will never use. Offenhaauser 5191 aluminum dual quad intake manifold for the 401/425 Nailhead. It has been ceramic coated and has not been used since, and may have never been used at all. It appears to have been manufactured on July 23, 1992. These are $469 new without ceramic coating from Summitt (http://www.summitracing.com/parts/OFY-5191/). $350 plus shipping and insurance. Free delivery to Bowling Green if paid in advance.