SPELAB Exhaust Header for 1977, 1978, 1979, 1980, 1981, 1982, 1983 Datsun 280Z 280ZX 2.8L Replacing or upgrading your exhaust header is necessary for both engine performance and sound. Whether on or off the track, exhaust headers provide more horsepower and improved exhaust sound. SPELAB offers many products to help you create your own custom engine headers. It's really easy and convenient to use: direct bolt-on, no modification needed. Fitment: 1977-1983 Datsun 280Z 280ZX 2.8L Specifications: Brand Name: SPELABCertificate: ISO9001:2000Application: Automobile Exhaust HeaderMaterial: Stainless SteelSurface: Mirror PolishModel:EH28934X Exhaust Headers vs. Exhaust Manifold: Which Option Provides Better Performance? When choosing between exhaust headers and exhaust manifolds, understanding the key differences in material and design is crucial. Exhaust headers are typically constructed from lighter, thinner steel, whereas exhaust manifolds are made from heavier, thicker iron. Additionally, exhaust headers are generally longer in length than their manifold counterparts. One of the main performance differences lies in exhaust flow. Exhaust manifolds tend to create backpressure due to their design, which can negatively impact engine performance. In contrast, exhaust headers eliminate this issue by providing a dedicated tube for each engine cylinder. This allows exhaust gases to flow more freely without causing backpressure, leading to improved power output and engine efficiency. Given their superior design and performance benefits, exhaust headers are generally the better choice over exhaust manifolds for those seeking enhanced engine performance and efficiency.