Intake Manifold Gasket - Printoseal - 0.06 in Thick - 1.82 x 2.54 in Rectangular Port - Composite - Big Block Chevy - Kit MPN - R2 FITS MOST AFTERMARKET MANIFOLDS WITH RECT. PORTS THAT HAVE UPPER BOLTS AT INTAKE PORTS. ALSO FITS BRODIX BB-1,2,2X,3,4 HEADS. 1.82X 2.54 RECTANGLE PORT 8 BOLT HOLES Vendor FEL-PRO Truck Freight-- NO