Oldsmobile V8 350-455 Distributor Fits Olds 260, 307, 330, 350, 400, 403, 425 And 455. Must Be Used With An 6, 7 Or 8-Series MSD IgnitionTIG welded on top of the polished steel shaft is MSD's adjustable mechanical advance assembly. To accurately trigger the ignition, a high output magnetic pick up is bolted to the base. This trigger pick up produces a precise trigger signal. An MSD red cap with brass terminals and Race Rotor are supplied. Sharing the CNC machining techniques with the rest of the MSD Distributor line, the Olds housing is machined from high quality 6061 T6 aluminum.