Accel BEI II?

Just picked this up for a good deal.

NOS in box Accel BEI distributor with mechanic tach drive for a big block mopar and Accel BEI II ignition box.

Bought so I could run a old Jones/Stahl/Moroso tach without going points or magneto.

has anyone used one of these boxes? MSD makes an adapter to use a 6al, but I’m curious as I have a thing for period speed parts. And could I wire up a rev limiter to this like a old Mallory Engine Safety Control?

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Mark