Found this link from Facebook Datsun parts and needs. Thought I should post this here also for some reference shots. This guy has collected about 200 engine photos.

 

https://photos.google.com/share/AF1QipOOstuMLWQ-T-nfkSMbw1tvyAboqyIZEECGlrSo1O7NPbcNEB-Of7X1-LCM-BVavA?key=VXlBaFpISGZBcTl1T1lTcVVuUEVwbWRwMkJPekdn

That's neat. I like all the plug wire configurations.

That's a great resource.  Lots of time invested by the owner of the site.

 

Now I know where the wire stand for the oil pressure sender unit goes!