MSD Ignition 8378 Crank Trigger Distributor Features: Low Profile Cap Assembly To Clear Busy Intake Set Ups Bronze Gear That Turns Shaft For Use With A Crank Trigger Must Be Used With MSD 6/7/8-Series Ignitions Height: 18.00 Width: 7.00 Length: 7.00 Weight: 4.80 lbs Vehicle Type: Distributor