The Adjustable Fuel Log fits a wide range of carburetors having various fuel-bowl configurations. This includes all Proform Race Series Carburetors as well as Holley 4150 and 4500 models. Each Adjustable Billet Fuel Log includes carburetor stanchions with #8 A/N female fittings. The log's inlet side comes with both 3/4"-hex #6 and #8 A/N fittings. Outlet is 3/8" NPT to allow more room for a regulator. The Adjustable Billet Fuel Log is available in two finishes. First is natural billet aluminum, which is part number 67183B. The fuel log in anodized Proform Purple is part number 67183PU. We found one for $123.95. For more information contact Proform Specialty Auto Parts at (586) 774-2500 www.proformparts.com