Nissan Electronic Ignition Distributor. OEM large cap "Matchbox" distributor. A highly reliable ignition system,  100's in use for decades.
 
These are the EXACT distributors originally developed by G.Boone/D.Brisco and others.  
 
We also actually run test these distributors here in GA prior to shipping so an easy installation and startup is assured! 
 
Matching coils available.  Core exchange required.
 
Ask us about EI conversions for the Hitachi distributor if you want to stay with an original style unit, cap and rotor.