Sierra 18-5299 Electronic Conversion Kit, Sierra high-quality engine parts are designed to meet OEM specifications. For use on most Prestolite V-8 Distributors with screw down caps.Replaces points & condensers for true solid state ignitionUses standard coil, cap & rotorEasy to install, one-piece, 2-wire hook-upAccurate to within 1/4 timing accuracy 0 to 6000 RPM rangeUse with 18-5403 style rotor