These Ford Racing cast iron exhaust manifolds are perfect for those building hot rods or just replacing their stock manifolds. Ford Racing designs these manifolds to hug the block, making them perfect for cars, trucks, and hot rods with limited clearances under the hood. The castings use the best materials possible to resist cracking or warping and are optimized to maximize flow to help your car make the most power possible with a smooth power band. When it comes time to get your car on the road, you can trust Ford Racing and these cast iron exhaust manifolds.