MSD GM HEI Street Fire Advance Kit BR10002 Utilize high-temperature steel wool packing

Utilize high-temperature steel wool packing for sound control

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MSD GM HEI Street Fire Advance Kit BR10002 Utilize high-temperature steel wool packingThis kit will help you achieve the solid ignition timing you need! The Kit comes with new advance weights, springs to set the rate of advance and new bushings. This is designed for the Street Fire HEI and stock style HEI Distributors ONLY. This kit will help you achieve the solid ignition timing you need! This is designed for the Street Fire HEI and stock style HEI Distributors. (Not for use with Billet and Pro Billet MSD Distributors)Features: Fits