We built a Meikraft Model of the Link Blue Box Trainer. It is tiny – 1/72 scale. Easily fits in a 3” diameter dome. Lots of hidden detail inside the fuselage like rudder pedals, yoke, an instrument panel, and even wood trim. Ours is #171 of 550. The kits are out of production, but show up on ebay.com from time-to-time.
Your pictures make me want to build mine too. Your pictures also remind me that I have another model of a blue box that is made of paper that I down loaded off the internet and assembled. It is about twice as big as our Meikraft models