A "one wire" Delco Alternator replaces the entire original Lucas electrical system. The system was switched over to negative ground to make the sound and other electrical sytems happy. The new engine is running a GM HEI distributor with an Accel coil and a Crossfire distributor cap. The Crossfire cap assigns the plug wires to the proper side of the engine to eliminate the crossing of wires behind the distributor. The plug wires run under the headers to further dress the engine compartment. It makes for a very clean plug wire installation.