I believe it would be metric. Referring to the work shop manual and personal experience the drive nut is actually a 32mm. Plus all the other nuts and...
I think for this video he just wanted to get it running. He also mentioned that he was going to do the vod. I suspect that the lines will be replaced...
This is not the first time I've seen someone using a product like that on a D. There's another YouTube video of someone doing it. I also am skeptical...
Well the workshop manual was kind of a rush job. The POGs at the QAC centers were writing and doing the illustrations for the manual at the same time...