I agree Clive. One of the reasons I fitted mine to the Ferret was to do away with the worry of mis-synchronised points. One of my early problems in getting the Ferret to run was that it was only running on the front 3. I discovered eventually that the “bridge” between the terminal post coming in from the coil and the post for the fixed contacts (ie the bridge that runs under the baseplate) had fractured and although I soldered it I wanted to do away with that hassle. The cold staring characteristics of the electronic ignition, from my experience of J60s, is excellent. As it is, the conversion seems to have gone well. Although as I mentioned above hasn’t cured my inability to rev. (I now believe the latter is down to a seized transmission....)
The conversion took me a while to do properly - routing a second wire (made up of that rather good, thin Cvrt red LT wiring) through the armoured cabling and ignition filter (just enough space ). You wouldn’t ever know the difference. I’m going to try a conversion on My B80 using a second hand Jolley unit...