D6K is the six-cylinder version of the Hitachi D4K Distributor (matchbox distributor).
Ignitor
D6K uses the same ignitor (matchbox) as the four-cylinder models
2-connector
Has C & B connectors (Battery & Coil.negative).
Hitachi E12-80 Nissan 22020-S6701, 22020-S6702 * 720 1980 * 910 1981 * N10 1979-1980 * S110 1979-1980 * S130 1979-1981
4-connector
Has I & W terminals on the side.
Reportedly will retard timing automatically at high RPM. So may be useful for a forced inducation setup.
Hitachi E12-93 Nissan 22020-P9700 * 910 83- Nissan 22020-W3100 * 910 82- * S130 82-
Aftermarket Ultrapower LX554 Kemparts E545 BWD/Niehoff CBE509 Beck/Arnley 1800031 ACDelco E1946A Airtex/Wells 6H1210 Wells JA123 * 22020-P9102 * 22020-P9700 * 22020-P9701 * 22020-P9702 * 22020-W3100 * 88921516, JA123