Richard, I have been using Vredestein Sprint Classic 175HR14 88H on my ‘71 series1 Z and they are pretty much a perfect size match to the Bridgestone Super Speed Radial - 20 original tires.
This is what is so fantastic about this site and the rare types of parts that are needed and pretty much unavailable to purchase new. Thanks to everyone for helping to keep these Ladies on the road!
Pretty sure I remember reading about people using the oil pressure sending hole as a source to prime the whole block with oil (might have been @Captain Obvious , although not obvious). So, if you can rig up a way to push oil in that way it should fill the system. I am not personally familar with that plug, it should be described on the Monroe Rebuild book, but it does look like it matters if it's the one end at the end of the main passage/gallery/galley. If it was left out, the oil would not get very far after it left the pump. There would be no pressure build either. One of those borescopes would be handy.
I can remember reading about a head gasket that covers one of the oil holes but that's about all I remember. I wish you the best of luck how ever it turns out.
That is the sound deadening material, AKA "tar mat", that was factory applied to the floors by Nissan. Unfortunately they applied it to bare metal. It is safe to remove, search "tar mat removal" on this site, and you find lots of ideas. Like using dry ice. If you plan to replace the tar mats later, and want close to original, see our downloads area, in the cad files section, I posted some tar mat templates there.
I installed the front grill today. As you can see, the paint is a little darker than the original, but I am not interested in painting it for a third time, especially since I have a wrist cast for the next six weeks. Interestingly, when in the sunlight, the original paint does appear to be metallic. The metallic particles seem smaller, less noticeable, but they do reflect. This is not easy to capture in a photo (second pic here): Original grill hardware: