Features:Drop-in billet replacement for GM distributors with the small cap and external coil; Factory style ignition module accepts factory wiring; CNC machined billet aluminum housing and billet aluminum base; ?Magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range; ?Oversized steel shaft is QPQ coated and guided by a sealed ball bearing and an extra long sintered bushing; Special oil tract improves lubrication to the distributor and cam gear; O-ring seals can be added to modified blocks to improve oil pressure control; Supplied with late model distributor cap and rotor; Legal to install in all 50 states; Marine UL Certified;