You have your choice of many ignition systems.
Both Pertronix & Mallory (Unilite) make systems that replace points, and fit in your original distributor. You can also use replacement electronic distributors made by many companies. On top of that, you have a gadzillion coil choices, and can also add MSD, Crane HI-6, and other CD systems. Much to choose from, do a search here.
My choice I am currently using is a Unilite distributor, Crane Hi-6 system and matching coil, Jacobs 8.5mmm black wires, stock plugs with a larger gap. Never a plug problem, fast starts, reliable.