Flowtech Mild Steel Exhaust Headers - 31170FLT Part #: 31170FLT Line: FLT Flowtech Mild Steel Exhaust Headers 90 Day Limited Warranty Color: Silver Finish: Ceramic Coated Flange Thickness (in): 5/16 Inch Material: Mild Steel Port Shape: Round Style: Long Tube Hardware Included: Yes Tube Size (in): 1-5/8 Inch Collector Size (in): 3 Inch Gasket Or Seal Included: Yes Bend Type: Mandrel Primary Tube Diameter (in): 1-5/8 Inch Tube Gauge (ga): 16 Gauge Tube Direction: Down-Swept Engine Make/Size: Pontiac 350 To 455 Show More Show Less