Hooker Headers 8501HKR Hooker Exhaust ManifoldsExhaust Manifold Hooker Exhaust Manifolds Hooker Exhaust Manifolds; 1. 625 in. Tubing; 2. 25 in. Collector; Hi Silicon Moly Ductile Iron; Natural Finish; SPECIFICATIONS: Collector Diameter: 2. 250 in. Finish: Natural Head Style: Manifold Position: N A Primary Tube Diameter: 1. 625 in. Tube Material: Cast Iron WARNING CA Proposition 65: No FEATURES: Tight Tuck Design Provides Universal Fit Free Flowing For Good Performance Catalytic Converter