Exact reproduction of the free-flowing, high-performance cast-iron exhaust manifolds used on the 428 Cobra Jet, 428 Super Cobra Jet, and GT500 Shelby's. Concours correct with original Ford® logo and part numbers cast into the manifolds. These manifolds are available in both early and late versions. The earlier version manifold has the correct spacer on the right side while the later version manifold does not. Installs easily and eliminates clearance issues compared to headers. Compatible with factory exhaust systems and H-pipes. Spacer also available separately.