Remflex Ford V8 Cobra Jet 429 460 Exhaust Manifold Gaskets 68 - 78 # REM3011Remflex Ford V8 Cobra Jet 429 460 Exhaust Manifold Gaskets 68 78 # REM3011 FORD V8, 429 (Car '68 '73, Truck '70 '73)(Incl Cobra Jet, S Cobra Jet), 460 Car '68 '78, Truck '73 '78 1 9 16" Port Style: Oval Gasket Material: Graphite Port Height (in): 1. 563 in. Port Width (in): 1. 344 in. Thickness (in): 0. 125 in. Quantity: Sold as a pair. Notes: Can be used with exhaust manifolds or headers. Remflex exhaust header gasket sets feature 100 percent