(1999 - 2018) Chevy & GMC Silverado / Sierra 1500 / 2500 **Downpipe Kit Only** Pontiac-Firebird-1981 ZGL6401OM- 64 1/2' Ford Mustang

ZGL6401OM- 64 1/2' Ford Mustang

Bar and Plate 4

you need that added volume and capacity

Once the turbo system is installed and setup

(1999 - 2018) Chevy & GMC Silverado / Sierra 1500 / 2500 **Downpipe Kit Only** Pontiac-Firebird-1981 ZGL6401OM- 64 1/2' Ford MustangThis is the downpipe kit for our standard T4 GM Truck kits from 1999 2018, it utilizes a stepped 3. 0 3. 5" downpipe. This will be sold with an option for the downpipe only and also with the mid pipe and straight section depending how you select it. If you opt for the midsection, it will include the clamps needed in the upgrade price and will come with everything photographed. If you select downpipe only, it will not come with any clamps. We have been