PRO MAG 12LT Features: Compact billet housing is 3. 5" in diameter for increased manifold/injector clearance. Rynite injection molded cap with brass terminals and locking rotor. Generator mounts to the housing for easy timing adjustments. Designed with Sprint cars in mind, the Pro Mag 12LT is almost 30% lighter than the original Pro Mag, but still produces the same incredible power. The compact housing also sits an inch lower for improved clearance of the fuel injection plus features a band clamp mount for easier timing adjustments. Available for Chevrolet, Ford and Chrysler engines! While we were at it, we designed a new cap and rotor exclusively for the 12LT series. The cap features brass terminals and is injection molded from Dupont Rynite material for its high dielectric properties and strength. The rotor is also a special design that clamps to the shaft with a retaining bolt assembly. Each Pro Mag 12LT is supplied with a bronze gear, band clamp, cap and rotor.Pit Stop USA offers MSD Pro-Mag 12 LT Magneto - Fits Chevrolet 7908 at low everyday prices. Be sure to check out all of our products from MSD including MSD Magneto and MSD Magnetos.