take the cap off and mark the inside of the distributor with a sharpie where each post would be in the firing order
crank the motor over by hand so the timing pointer is at 0 on the dampener
look at the rotor, it should be at one of two places.
slighty to the right of 1 or midway between 2 and 6
if its at the later then rotate it again to "0" and it should be slightly to the right of 1
if it is no where close to that then rotate the dist to get it to where it should be. if you run out of side to side adjustment with the dist you will need to pull it and move the rotor so get it closer to where it should be (slightly to the right of post 1)
remember that the rotor will want to go counter clockwise when the gear grabs so you will have to play with it to get it to drop in the best spot
if you have it near 1 and the car won't run or runs like poop then you need to rotate the motor again to "0" and re-seat it as you were at bdc and not tdc
there is no such things as being a tooth off as people like to say, you technically just run out of side to side adjustment because the dist will hit something
hope that helps