Offered up is a Performance Felpro Head Gasket. This gasket fits Ford 351C, 351M and 400 CID Engines. These are sealed in the original Felpro Wrapper and have not been opened. 4.100" Bore 0.041" Compression Thickness Steel Core Laminate Ford Cleveland/Modified Sold Each I have a pair of these at $25 per gasket. $50 for the pair. These sell at your local parts house for $141.82 Retail and Garage Price is $68.16 each. Here is a chance to grab the pair for $50