Spec-D Tuning TM-K-MST79V8 Spec-D 5.0 V8 Turbo Manifold 1 Set of Flange Configuration Manifold Made of high quality stainless steel Maximum performance increase up to 10-15 horsepower 30 Day Money Back Guarantee & 90 Days Limited Warranty Made by OEM approved & ISO certified manufacturers in materials that meet or exceed strict OEM requirements