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These mufflers are available in 3 configurations Centre/Centre
Big Block Chevy 396-502 oval port
These hangers are ideal for retrofitting an EFI fuel pump into older steel tank vehicles
Fully opens at correct temperature consistently regardless of engine rpm
a smooth idle and great performance
Two Step Module Selector Suit Digital 6AL Only MSD6425 MSD8732 Category_VALLEY COVERS These mufflers are available inTwo Step Module Selector Suit Digital 6AL Only MSD6425 Since the new Digital 6AL Ignition uses rotary dials to adjust the rev limiter, our engineers were tasked with developing a 2 Step Rev Control that could be added to give racers the ability to switch to a low rpm limit to use on the starting line. The new 2 Step is also digitally controlled and connects to the Digital 6AL gray tach output wire. There are two easy to read rotary dials that let you