[LOWRIDER]

If you have a dwell meter snug the point screws like Dave mentioned then disconnect the vacuum advance line. Next have a friend crank over the engine and adjust the points to the 29 degrees while it's cranking. Tighten the screws down & recheck the dwell to make sure it hasn't changed. That's the way we did Fords back then. GM cars had the window on the side of the cap & you could adjust them while it was running.