I am using a Duraspark distributor with an MSD 6A box.
The distributor has an old school, black small diameter cap and uses male wire connectors plugging into distributor female sockets.
I am using a Taylor 8mm “universal” silicone wire kit, with wiring cut to my desired lengths with correctly crimped terminals
I have an early full screen center cover and the distributor poses no interference.
I have read where some say the smaller cap, with closer connections, can sometimes crossfire due to the high voltages in a modern ignition.
after about 3000 miles with this set up I have noticed no issues.
Larry