Here is a New Old Stock Intermotor Distributor Cap (for Hitachi Distributor) for 

Nissan

Bluebird U11 1.8, 2.0 1984-86

Cherry 1.5 Turbo N12 1983-86

Pulsar Turbo 1487cc (E15T engine) 1982-85 (USA models)

Sentra 1597cc (E16i engine) 1986-87

Silvia Coupe 2.0 ZX S12 1984-89 models.