Now you can convert your factory side exhaust small block C3 to a high performance rear exit style system with no modifications to your rear valance. Our 1968-1973 Corvette Magnaflow 2.5" Street Series Manifold-Back Exhaust System utilizes specially designed mufflers with 2.5" single turndown style outlets eliminating the need to modify your rear valance panel to accommodate exhaust tips. Magnaflow’s Street Series Corvette Exhaust System features stainless steel construction from the manifold to the tips and is CNC mandrel bent to optimize exhaust flow and provide superior fit. System measures 2.5" tube with 2.25" inlets at the manifold and includes Tru-X crossover pipe and produces a smooth deep tone while improving horsepower and torque through the entire RPM range.