Maybe, the engine is still at the shop so I can't check it, sent a message to Brian so I should know hopefully soon.
I am leaning to the hall sensors inside the distributor, reason is we switched out and used LS Coils that are Coil on Plug and had the same issues. With both set ups , we were using the hall sensors in the dual sync dizzy to get cam and crank timing signals that tell the coils when to fire. It seems logical now that we took a break from it and I am thinking more clear. If the pick up sensors are getting an intermediate interruption, the coil or coils will not fire leading to the intermediate miss which you can clearly hear and see with a strobe at the spark plug wires on every cylinder, sperratically.
