These assemblies include a base plate, a timing wheel, a crank seal, two pickup holders, a cover and all the necessary fasteners and pointers. All pieces are machined from billet aluminum, the cover, base plate and pickup holders have a tumbled finish. The 5" diameter timing wheel is hard anodized black with 360 degrees of timing marks laser etched around the outside diameter. The timing wheel is made to fit on the crank shaft and has the standard SBC damper bolt pattern machined on the face. On a V8 application with the pickups centered the magnets are placed for the timing to be set at 35 degrees BTDC. These assemblies are drip proof but not sealed.