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Not bad. There are still good Z project opportunities popping up out there. https://bringatrailer.com/listing/1972-datsun-240z-357/

The odometer clicked over 500 miles on Friday night, so I took the valve cover off yesterday and did both the leak down test and adjusted valves. Here were my leak down percentages: #1 = nearly 4% #2 = 2-3% closer to 2 #3 = 4% #4 = 4% #5 = 3% #6 = a little over 1% For my Iskenderian cam, the valve lash is .006" on the intakes and .008" on the exhaust. I set each so that the feeler gauge was a snug fit while the engine was cold. All of the cam lobe surfaces looked great! The next time I fire it up and get the oil warm, I'll change the oil. Today, I removed a portion of the exhaust and the driveshaft and measured the angles of the front engine dampener and the pinion flange on the differential. I believe I will be able to lower the transmission rear crossmember to bring the engine/transmission assembly to the same 87.1 degrees that the pinion flange is at. I will just need to add shims between the transmission crossmember and the car body. Oh! And I just remembered that I should check the angles in the horizontal plane (not just vertical) as well.

I found the angles today of the front dampener and the pinion flange: I measured these with the car on the lift. The rear moustache bar is locked in solid - there is no vertical movement at the mounting location. Same for the front diff mount. So, I don't have to consider suspension movement (doing this with the suspension loaded). The angle at the differential pinion flange is 87.1. And the angle at the engine dampener is 89. I should be able to drop the rear of the transmission, hopefully a small amount, to get the angle at the dampener to match. I am glad I didn't use the original motor mounts, which were shorter, and would make this problem worse.

ECCS was first used on the 430-series Nissan Cedric in Japan (June 1979). ECCS stands for Electronic Concentrated (Engine) Control System. Electronically-controlled (via an ECU) injection was introduced on a 230-Series Nissan Cedric 'EL' model at the 1970 Tokyo Motor Show: Nissan was actively using a system ECGI (Electronic Controlled Gas Injection) back in 1971. Nissan group affiliate Diesel Kiki licensed the Bosch D-Jetronic system patents and re-engineered it to use with double and triple sidedraught throttle bodies on competition cars:

Don't forget the "black box" or the "voodoo" part. "Dr. Bosch's Black Box of Analog Voodoo and Wizardry". That's what makes the engine go vroom. * "DBBBOVAW"

Some of you have dealt with this little annoyance, and I have found a perfect solution. When doing a full restoration, or at least the full interior, you often have to replace the head liner and the A pillar vinyl, as well as the vinyl trim that goes across the top of the windshield where the sun visors and rear view mirror mount. While I won’t discuss the pain of installing these items, what I have found is even more of a pain, is finding the nine M5 threaded holes to put the visor and mirror mount back in. All that fresh painfully installed lovely vinyl, and 9 secret little holes you have to find to poke holes through. Get out the pokey thingy of your choice and start poking until you find them. If you put some kind of thin foam behind the vinyl like you’re supposed to, those damn holes are just a nightmare to sleuth out. Not any more! I put some nice long M5 grub screws in the nine threaded holes, THEN do the upholstery. Then finding the tips of them sticking out is easy! Make little “X” slits to expose them, grab your M3 hex key, back them out and screw in the visor and mirror mounts. Five minutes each! Easy peasy.

My guess is that the Datsun garage dash is supplied by Vintage Dashes. Perhaps they got a bulk order discount at the time. I know that Jay, owner of jdmcarparts.com, distributes his parts to Motorsports and other Z suppliers. I think Vintage Dashes does the same thing. Not a lot of people out there making Dashes. Datsun Garage dash may be a blem. Also, FWIW, I love the Vintage Dashes. I have assembled and installed 4 of them and they look great. I have done 2 Just Dashes and they are good, but do not maintain the shape of the original dash. I was not happy with how they shaved the foam over the 3 center gauges. The foam was thicker in that location than the original. I posted pics of the difference on one of my blogs here. Both companies use the same black plastic overwrap and have the same grain, which is different from the original but not a big deal. Only nerds like me pay attention to material textures. Also, I can relate to your windshield loss. I accidentally dropped a head onto an original Z windshield when working in tight quarters at my old house. I was crushed.