MSD's Pro-Billet Ready-to-Run Distributors are the perfect upgrade for ancient breaker points or other worn out distributors. Beneath the bolt-down cap a maintenance-free magnetic pickup produces accurate trigger signals while an oversized shaft is guided by a sealed ball bearing. An easy-to-adjust mechanical advance allows a custom tailored timing curve to match what the engine needs while a vacuum advance canister increases economy on long cruises. An added bonus is that the Ready-to-Run distributors now feature a built-in rev limiter. The rpm limit is simple to set and you can grab the throttle without worrying about overrev damage from a broken driveline or missed shift! Ready-to-Run Distributors feature a powerful ignition module built into the billet aluminum housing. This module produces a powerful inductive spark that will improve combustion of the fuel mixture resulting in quick starts, smooth idle and increased performance. The changes in reliability and drivability are hard to measure but will surely astound anyone who updates a worn out points distributor. MSD Ready-to-Run Distributors are available for V8 AMC, B-O-P, Ford, Chevy and Chrysler and even some cool retro engines including 348/409s, Nailheads, FE's and early Hemis!