electronic ignition want to convert

Convert "to what?"

There are many ways to go.....Some guys like Pertronix, and while they seem to be reliable and have a good reputation......you are not going to buy replacement parts at "the store" when you need 'em.

You can go with a Mopar ECU conversion......

Or as above (my choice) you can use a GM HEI module. The advantage of it is no ballast, and even with a factory coil, gives you a hotter spark.

Above and beyond is Mallory/ Accel/ MSD, "the other" aftermarket stuff

And the so called "Skip White" "all in one" distributors, which are cheap and ALSO get used by a number of folks on here