Hello. Curious if you have any pics. My 75 280Z is not with me yet. I'm assuming I will be doing some wiring updates, as things like the injectors have been butt-spliced.
I've assumed all the terminals are JPT, since the FI system is Bosch L-Jetronic, or at least a licensed copy thereof.
The male terminals are all 2.8mm, the female would certainly be wider if you are measuring the 'tang' width. Are you using the revised terminals with the spring tab sleeves?
Example: TE 964286
I usually get all my JPT terminals from Mouser, however I have stooped to buying some off Aliexpress. Those are not always to spec.
Just to provide some context, I am very familiar with extensive wiring mods. I had to fabricate harnesses for the Honda K24 drivetrain into my '87 Bertone X1/9, and for the ongoing LS1 swap into my 91 Volvo 740 (converted to pickup). I keep an extensive supply of terminals & use the proper crimp tools