You can run the Digital 7 with the MSD Distributor.
But if I could make a recommendation, you would get a more accurate signal with a Crank Trigger vs. a Distributor.
Currently with a Distributor you get some inaccuracies due to either Timing Chain or Belt flex, along with Camshaft twist and/or deflection, which could cause some inaccurate timing signals. The Crank Trigger offers the most accurate way of sending a pulse signal to the Ignition Box.
Just some food for thought,
I hope this helps,
Thank you for inquiring,