MSD 3 step works fine
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MSD 8737 3 Step Module Selector With Three Built In Rev Limiters Chip Style
msd 8731 MSD 2-Step Launch Control Ford Coyote 5.0L - 2011 - 2016
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MSD 3 Stage #8970 Multi-Retard Control Analog Programmable With Zero & 7° Chips
MSD 8732 Digital 2-Step Rev Control, for Digital 6AL PN 6425 Only
