ross2004 Posted August 21, 2017 Report Share Posted August 21, 2017 This is a Nelson Specialties multi-spark box, external rev limiter, and 5,000-5,800 rpm pills. Who is Nelson Specialties? I have no idea, but apparently they would take MSD boxes and beef them up for racing use. This box functions like an MSD 6T, and the rev limiter will only work correctly with an 8 cylinder engine. Free canister coil with every purchase! $115 shipped. Quote Link to comment Share on other sites More sharing options...
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