GM 2500 Truck 6.0L 1999-2006 Long System

American Racing Headers’ long systems for the 1999-2006 2500 GM Truck were designed to bolt-on to your factory axle-back or any aftermarket axle-back. Some modification may be required. If you have any question about fitment or connection point, please do not hesitate to ask our tech team! Here Product features on this system includes: 100% Made in the USA – Never Outsourced Made entirely of 304 stainless steel 3/8″ thick laser-cut flanges for a warp-free seal Hand-ported TIG welded inlets Optimized primary tube routing for superior fit and performance Merge collectors with scavenger spikes Catted systems feature severe duty 300 cell catalytic converters with the option to upgrade to 400 cell G-Sport catalytic converters. Call before ordering to upgrade. Attn. All ARH products are exclusively manufactured for racing purposes. Installing these products on any vehicle eliminates the legal use, in any capacity, on public roads/highways and may be subject to fines and/or criminal liability as per the Clean Air Act.