Constructed of durable mandrel bent brushed 304 stainless steel tubing for maximum performance, and corrosion resistant to eliminate cracking. A 1 - 34 head pipe stepped to 2 x .120 wall stainless steel tubing, is used to increase exhaust velocity and increase usable torque. This means a more aggressive throttle response and increased passing power. 100 TIG - Welded by certified craftsmen for race proven strength and durability. TIG - Welding provides the strongest welds reducing stress cracks. Utilizes a divided diesel T - 3 flange to increase exhaust velocity and turbo spool and boost