[tubman]

I agree it's a stock 8BA type distributor. As such, the point gap should be .014-.016" and the timing should be set so the pointer on the front cover is pointing at the dot on the crank pulley at idle speed with the vacuum advance disconnected and plugged.

If you have an advance timing light, you may want to get fancy and set the timing at 22 degrees advanced at 2400 RPM with the vacuum advance connected and see where the idle timing falls. Efficient engine operation is more important at cruise than at idle. You might even want to try 20 or 24 degrees to see what works best.