Ballast resistor

An opportune time to consider switching to an HEI module. Many posts here on that. You can lose the ballast and run a better e-core coil. I like the GM 8-pin module and coil. You can grab off any V-8 truck w/ TBI at the junkyard, and the cable connecting them. You might also grab the knock sensor and module if you later get an ECU to control spark timing (Holley, etc).