Magnaflow's stainless steel X-pipe with high flow cats is a direct bolt on replacement for the factory piece. Magnaflow's pipe feature metallic substrate high flow catalytic converters and full stainless steel construction. Will provide average gains of 12 to 15 rear wheel horsepower and improve exhaust sound. MAG-16433Regular price: $719.95Sale price: $689.95 www.realspeedauto.com Ph.631-563-7325 All parts listed are for the Ford Mustang unless otherwise noted. Copyright 2018 Realspeed Automotive Inc. All rights reserved.