Early flathead racers and cruisers alike will be excited to see these front mount flathead distributors! These distributors are built around a CNC-machined billet aluminum housing for precise tolerances. The distributor is topped off with our own crab cap with spark plug style terminals for improved wire connections. Just under the cap and Rynite race rotor is MSD's adjustable mechanical advance. This assembly features chromoly construction with Tig-welded weight pins to secure the precision fine blanked weights. MSD supplies different advance springs and stop bushings so you can dial-in an advance curve to meet your flathead's specs. Just under the advance is MSD's race-proven magnetic pick-up. This pickup, combined with a reluctor, produces accurate trigger signals that are responsible for firing the MSD Ignition control. Bring your flathead up to date with MSD Performance.