69 383 Performance

Here are two pics that might help. You´ll be able to read where the ignition is set at the tab where the arrow points. Yes, you´ll need a timinglight. There are two options, one timinglight that you´re able to preset the timing you would want. And the other one is "static" and you´ll read the actual number on the damper (in this case it helps with a timing tape on the damper, see pic).
Here´s a video where he dynos a 383 and sets the timing in the beginning of the vid.
[ame="https://www.youtube.com/watch?v=nnaRtd-SSJY"]MOPAR 383 CHRYSLER DYNO SESSION - YouTube[/ame]