Suitable For: Triumph Spitfire Fitted with a Ballast Ignition System. Custom Built To Suit Your Engine with Matching HT Leads and Viper Coil. Delco Style D200 Electronic Distributor. HT lead set. Solid dry coil design with the traditional wet coil appearance makes this ignition coil a versatile robust component that will provide modern technology for your classic car whilst retaining the classic appearance.