Convert your early Chevy, Ford or Mopar by replacing the worn out distributor with an MSD Pro-Billet Dual Sync Distributor and blank cap. The Dual Sync plugs directly into the 6015MSD DIS Ignition control providing the cam and crank signals. The DIS then plugs into a set of GM smart coils, a.k.a. LS coils, and just like that, your early bullet has modern firepower.