I'm unfamiliar with those. I'd be looking for something in the area of the reluctor for crankshaft timing. Maybe a second set of wires or such. My understanding was that the dual sync would handle crank and cam signal duties. What brand and model?
ETA: I see now it's that FAST brand.
Contact Lee Atkinson, he has a lot of experience with that brand and is a member here. Send him a PM, he's a good guy and will help if he can.
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'65 Tempest 467 3650# 11.30@120.31
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