Hedman Street Headers - 1.75 in Primary - 3 in Collector - Metallic Ceramic - Small Block Chevy - GM Fullsize SUV / Truck 1967-91 - Pair Turbo Fittings The cable harness has the

The cable harness has the proper connector so you can plug the 6M-2L into one of the Pro-Billet MSD Marine distributors

1/4-20 in and 5/16-18 in Thread

030 in Bore

1987-1991 GMC R3500 CID 454 GASVehicle Applications: 1968-1969 Chevrolet C10 Suburban CID 396 GAS

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