Ford 5.0L Pro-Billet Distributor Drop-In 86-93 5.0 EFI Pro-Billet Distributor MSD IgnitionInside each housing there is a sealed ball bearing at the top of the shaft. This design is responsible for accurately guiding the oversized polished steel shaft throughout the entire rpm range of your engine. The shaft is also QPQ coated for friction reduction and corrosion resistance. The Pro Billet Distributors use a stock style trigger pick up to accept factory connectors. For installation, you simply remove the stock distributor and bolt the Pro