Working on electronic ignition conversion for HP273 dual point distributors

I installed a petronix 1 in my 66 Barracuda S 15 years ago . Petronix said they did not have a kit for the 273 dual point but had one for a 340. I ordered the 340 kit and all I had to change was enlarge one screw hole very little. Works very good. I left the resistor in but bypassed it.
Back when I did mine I couldn't believe they didn't have one listed. But, that application was only for 3 years. They were good enough to get me one that worked by sending a distributor to them and they matched one up.