MSD GM HEI Street Fire Advance Kit BR10002 this muffler will deliver improved

this muffler will deliver improved performance

2018-2020 Ford Expedition Max XL

1969-1984 Chevrolet El Camino

2009-2011 GMC Canyon

in 100 and 1000 rpm increments

MSD GM HEI Street Fire Advance Kit BR10002 this muffler will deliver improvedThis 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