Trying to figure out which 340 electronic ignition to get

It looks good. Did you get the entire kit with the distributor?
Just the box and coil. Already had the MP distributor. Bypassed a 2 prong ballast resister with a white wire so still looks mostly stock. Have run it for about 5-6 years, no issues with it. Have a 360 with thermoquad, starts great, even in winter with no choke. as soon as gas gets to the carb that is. I hate the newer fuel.