I'm really sorry to hear about your friend.
Anyhow, it seems from your post that you have quite a bit of experience working around aircraft. Is it possible for you to deduce at what stage of assembly the second J-31 could be in (from what few photos we have)?
Thanks Sino Soldier, it was over 25 years ago, but it just broke my heart, I and several other young guys were flying right seat with him, it was very kool to cart start that Mu-2, and then run out and saddle up and fly it half the night. Flying 271MA was a lot of fun, but she was a handful? The last night I flew with him, we were in heavy rain, then ice, then a thunderstorm. Back then, there was a lady flying a Twin Beech 18 taildragger, now that would have been a ride every night, radial engines and all??
To answer your question, looks like they have the structure together and are working on systems, gear retracts, batteries and engines getting all that "buttoned up" takes time, so we could see a first flight, or at least run-ups in the next several months to 6 months time?
this is a very heavy "guestimate" as I'm guessing these are some "teasers" to catch our eye?