1961-66 Chevrolet C& K Nig Block Headers

1961-66 Chevrolet C &K -Series Trucks / Suburban 396-502 Big Block V8 Motor Swap Header Style: 4:2:1 Long Tube Tri-Y Headers Material: Steel Finish: Silver Ceramic Coated Primary Tube Diameter: 1-7/8" Primary Tube Gauge: 14 Gauge Collector Attachment: 3-bolt Flange Collector Diameter: 3" Tuned: No Flange Thickness: 3/8" Bolts and/or Studs Included: Yes Gaskets Included: Yes Adapters/Reducers Included: Yes Y-Pipe (Crossover) Included: No Weld Up: Yes, adapters must be welded to exhaust system