Pertronix data says that 40511 coils will not work with a points ignition system and are are for electronic systems only. They also state that .06 to 1.5 is the correct ohm for 8 cylinder engines. 3 ohm is for 6 cylinders. It looks like 45011 is the one you should have. https://www.speedwaymotors.com/Pertronix-45011-Flame-Thrower-II-Ignition-Coil-6-Volt-0-6-Ohm,20866.html
Edit: Reading Speedways blab I'm not sure this one would work either. I would contact Pertronix and ask them.
Go to Autozone (Duralast brand), O Rilleys, or NAPA and get a coil for a 1954 Chevrolet Belair 6 cylinder car - sorry I do not have the part number handy, but I think it was a C809, but that was the project late yesterday afternoon and I had to go about 20 miles to the next autozone, but project is done and they were 21 dollars and change each after tax.
