Fuel Cell Mounting Kit 4-Gallon 2004-chevrolet-silverado-2500-hd-esi3581412 The rear bumper cover will

The rear bumper cover will need to be modified to clear the driver's side exhaust tip

Exhaust Port Blockoff - 1-Piece - 1/4 in Thick - Plastic - Black - Spread Port / Dart - Small Block Chevy - Pair

Fitting - Adapter Tee - 1/8 in NPT Female x 1/8 in NPT Female x 1/8 in NPT Female - Aluminum - Blue Anodized - Each

Helmet - BR8 - Snell SA2020 - FIA Approved - Head and Neck Support Ready - Carbon Fiber - Size 7-5/8+ - Each

Tapered Spacer - 3/4 in ID - 1 in Thick - Steel - Natural - Pair

Fuel Cell Mounting Kit 4-Gallon 2004-chevrolet-silverado-2500-hd-esi3581412 The rear bumper cover willFuel Cell Bracket 9 in Wide x 10 in Tall Steel Natural JAZ 4 gal Plastic Cells Kit