OptiTorque Header Stud - 3/8-16 and 3/8-24 in Thread - 1.670 in Long - Broached - Big Block Chevy (Set of 16) NRGSRK-172H 60 PSI gauge with AutoMeter's

60 PSI gauge with AutoMeter's signature racing dial design

and a center halo support

042 " Hole Size Straight Type Includes 2 Gasket

Hooker Headers Competition Header 6915HKR Black Finish - Tube Size 1

1963-1965 Buick Riviera

OptiTorque Header Stud - 3/8-16 and 3/8-24 in Thread - 1.670 in Long - Broached - Big Block Chevy (Set of 16) NRGSRK-172H 60 PSI gauge with AutoMeter'sProduct Description: Header Stud 3 8 16 and 3 8 24 in Thread 1. 670 in Long Nuts Included Broached Steel Black Oxide Big Block Chevy Set of 16 OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.