Anyone know what kind of connector (all I want is the connector) this is and and where I can buy it?

I have pigtails for my RC injectors, but I am hoping to find these connectors and splice them with my RC pgtails so i don't have to solder them into my OEM injector harness or buy pigtail adapters.

 

This is for a Z correct? That looks to be an EV6 connector, but that would not help you in making double sided connectors to work on a 350z. The stock injector use a denso connector.

 

You can buy and new injector harness from Nissan for about $90.00, That's cheaper than a set of pigtail crossovers.