The Tyres are Nankang AW-6 All-seasons sourced from Blackcircles, in a larger-than-standard but not ridiculous 195/55R15 size (same diameter as original 165/80R13). They will hopefully assist with getting through whatever Winter brings our way.
Fitting was accomplished considerately and professionally by my local Halfords Autocentre, under the watchful eye of Gary. They removed a total of 6 universal (and hence floating-about) wheel spacers, torqued the nuts to a generic Japanese vehicle setting (seems fair), and informed me that one of my wheel nuts is missing.
It looks a bit different now.
Not only are the wheels and tyres a bit more realistic, but the rake of the van has reduced, due to no longer having dragster rear tyres and a significant front to rear tyre diameter difference. I think it's a big improvement.
I dug around when I got home, and replaced the missing wheelnut temporarily with an original Toyota Accessory locking nut that came with my RAV4. I think I have more nuts somewhere, but it can wait until I've moved house.
Pulled your post over to the new page for those who are following not to miss the update.
Funny that the one thing visually I liked less was the original wheels, though they were part of that identity.
I am liking the gold, and knew I would.
New rake and visual is more normal too, and appeals to me.
You are really getting on with doing this van justice.