1967-1972 Chevrolet, GMC BBC Headers

1967-1972 Chevrolet, GMC Truck 396-502 BBC Swap Tri-Y Headers Header Style: 4:2:1 Long Tube Tri-Y Headers Material: Steel Finish: Silver Ceramic Coated Weld Up: Yes, adapters must be welded to exhaust system Primary Tube Diameter (in): 1-5/8" Primary Tube Gauge: 14 Gauge Collector Attachment: 3-Bolt Flange Collector Diameter: 2-1/2" Tuned: No Flange Thickness: 3/8" Bolts and/or Studs Included: Yes Gaskets Included: Yes Reducers/Adapters Included: Yes Y-Pipe (Crossover) Included: No