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