The awful deed is done. Worked out pretty well I think, looks good, no leakage.
That is an upside down image come to think of it. I am on my back with my top of my head somewhere close to where the crankshaft is, looking up at the side of the block.
I probably wasted my money on the dry ice, it was only $6. I was wondering if the plug being really cold would make it condense moisture, I was correct. I got it in position, quickly wiped off the condensate with a paper towel and shoved it in place, started hammering, I used a half inch drive socket that was the right size to just fit inside. I don’t think it will be a problem, but I was concerned about having moisture in there along with the silicone gasket sealer stuff.
The install tools push on the outer rim. When I was about halfway in, one side was a little higher than the other, so I hammered on a large steel rod on the outer rim wherever it was high, then I reverted to my large socket with an 8 inch long extender.