consistant misfire out of nowhere

You can clean out the Holley 6 needle and seat on the 1920 model by taking the needle valve out from the outside; no need to remove the bowl.

For the OP:

- Remove the distributor cap and verify for all of us that the inside looks like the picture above, with a 6 pointed 'star' under the spark rotor button.
- Putting an an Accel cail may be good or not; the Mopar system works with a specific resistance of coil. Look up your coil model and see if it around 1.5 ohms primary coil resistance.
- As simple, no-equipment tests of spark to see if that is basically good:

1. Remove the distributor end of the spark wire from the coil to the distributor cap center post, and place that end 1/4" to 3/8" from metal, crank the car, and see if you get a steady series of good blue sparks from that wire. If so, your coil and ballast and ECU and distributor electronic pickup ignition power feed are good.
2. If good in 1., then repeat the test by putting the spark wire from the coil back into the distributor, and then take an individual spark plug wire, pull back the boot, and set that 1/4" to 3/8" from metal and repeat; you should get a good blue spark at 1/6 of the rate as before.
3. If bad in test 1., then the problem is localized to the coil, ballast, ECU, distributor pickup, or ignition feed.
4. If 1. and 3. are good, then it is time to look at the fuel situation in more detail.

Let us know what you find from these tests.