Editor's note: As pioneers of the industry's first high performance H.E.I. ignition distributor, the Davis family's company (now led by Steve Davis) has spent 40 years perfecting their product's ...

Performance Distributors' Racing D.U.I. (Davis Unified Ignition) Distributor can almost double the output of a stock H.E.I. Precision built, the ignition system is capable of turning up to 10,000 rpm.

The ignition system is a glutton for punishment. As the miles rack up, the distributor wears out, the coil gets abused, and the spark plug wires melt. The steadfast ignition system only gets attention ...

They say you can’t have your cake and eat it too. Which means you can’t have it all at the same time. Building a 4x4 is the same thing. Big tires kill fuel economy and eat power. Big power loves fuel.