Check the listing for details. For Chevy GMC 1500 Truck 99-06 2.5" Dual Exhaust Kits Flowmaster Flow FX B C T. Condition: New. Listed at 229.95 USD. For Chevy GMC 1500 Truck 99-06 2.5" Dual Exhaust Kits Flowmaster Flow FX B C T SKU: M25GF9906FFXBC18RE0 Brand: NA Condition: New Material: Aluminized Part Number: M25GF9906FFXBC18RE0 This kit is for your OEM to higher horsepower set ups. The 2.5" pipes are aluminized to increase the life and mandrel bent which is sure to increase exhaust flow, change the exhaust note, and boost performance! Finally get that sound you have been searching for! The exhaust pipes exit directly out of the rear of the car. *Product disclaimer: THIS IS NOT A COMPLETE "DO IT YOURSELF" kit. This can be installed with basic tools. It is recommended that this kit be installed by a professional. Fabrication WILL be required. Any type of suspension or wheel/tire modifications may affect system clearances. Additional parts or fabrication will likely be required. This kit is intended for custom purposes. This kit does not interfere with any emissions control devices nor can it be used to do such.