I ran a
pertronix on a delco with that same Serial Number(On a 1950). Its a 1167 ignitor.
Here is a pic
...click... If you do decide to go with pertronix
I suggest calling them. Give them your delco s/n, voltage, and have them tell you the correct set up.
There is more than one product for GM 6 cylinder.
Here is another suggestion.
Before you remove the distributor put your timing needle on the ball. Note where your rotor is pointing i.e. #1 or #6.
Then after you convert your distributor you will know exactly where your rotor should point when you drop it in.
I used the flamethrower condenser they offer. Its internally regulated.
Install new plug wires, cap , and rotor ,spark plugs at the same time. Increase your spark plug gap per the instructions
Then re-time.
Good Luck
