|Description: Top Street Performance HEI distributors are a great addition to any engine. These units feature high output modules with low saturation coupled with a 65,000 volt coil for higher spark energy over stock distributors. With higher spark output these distributors maximize combustion efficiency for more power and less plug fouling. The distributors offer longer-term durability with dual bushing construction, hardened steel gears, and solid brass terminals. Easy one wire hookup and adjustable vacuum advance make for a quick precise installation.