Unlock Hidden Horsepower and Torque. Replace those heavy and restrictive cast iron factory exhaust manifolds with free-flowing, lightweight, stainless steel shorty headers. Engineered to optimize airflow over stock systems, these headers help your GT unleash more power while maintaining precise fitment. Advanced Engineering Features: Crafted from 1-5/8" mandrel-bent stainless steel tubing for maximized exhaust flow Reinforced one-piece 3/8" thick flange ensures long-term durability Precision laser-cut mounting points guarantee OEM-level fitment Mirror-polished finish enhances under-hood aesthetics Seamless Installation: Direct bolt-on compatibility with factory mid-pipes on 2005-2010 4.6L GT Mustangs – no cutting or modifications required. Experience improved throttle response and deeper exhaust resonance while retaining emissions compliance.