Intake manifold, casting number 9772390 was designed for NASCAR racing, with a single Carter 3636S 3 barrel carb. A Carter 4bbl carb will fit. This is an ebay auction. Ebay Item number: 120391151682
Bid starts at $500. Buy it now for $700.
Eric
http://cgi.ebay.com/ebaymotors/ws/eB...m=120391151682