Prevent the chance of crossfire.
These larger caps from MSD have HEI-style posts, an adjustable rotor to allow proper phasing (Chevy and Mallory YL only), and wider post spacing to prevent crossfire and ionization. The kits include a high-quality cap with brass terminals, a rotor, and a cap spacer.

Cap and Rotor, Red, Male/HEI, Brass Terminals, Clamp-Down, Pro-Billet, V8, Kit