I just use the points but if you don’t want them then just go with the Pertronix points replacement setup in the existing distributor. I would also go with the replacement coil that is recommended for the Pertronix system.
I had my stock dist rebuilt and recurved for my rebuilt eng by Advance Distributor in Minnesota. Quality parts and advice. Running timed/ported vacuum with 17 degrees advance at idle, great response and performance.
Lectric Limited offers another version of points replacement. I am going to try that setup the next time I do a conversion. Do you just not want to deal with the points or looking for a performance upgrade? For the most part the HEI does not improve performance.
The spark plugs neither know nor care if the spark is triggered by a mechanical switch (points) or an electronic one. You’ll feel no difference between properly maintained points and electronic. The reason why people claim that the electronic “runs better” is because usually they are replacing a worn original distributor with old, pitted points and a crappy original coil. Yeah, no wonder the electronic runs better.
I put a conversion kit in my 62 only because I’m lazy. I didn’t expect nor did I get any performance improvement. The 215 is a small block Buick. Any SBB electronic distributor bolts in.
Very happy with start up and running with my rebuilt points dist. It is also now tailored to the engine which runs cooler and has better performance because of it. When Pertronix fails you stop, when points go south your car runs crappy and you get home. More than one owner that runs an electronic conversion carries the old points dist in the trunk. The amount of miles my car will see means I will likely never need a new set of points. Talk to Jeff at Advance dist for an experts explanation.