1986-1991 GM Corvette L98 System Cat-Back (MAG15658)The MagnaFlow Street Series Cat Back Performance Exhaust System is engineered to enhance the sound, performance, and driving experience of your Sys C B 86 91 Chevy Corvette C4 L98. Featuring fast flowing, mandrel bent 2. 5in stainless steel piping and 1 straight through performance muffler, this system delivers MagnaFlow's signature deep, resonant tone with dyno proven performance gains. Designed to produce Moderate exterior and Mild interior sound