Thanks, that's a very cool keyboard and I love the integrated winkey blockers. Unfortunately the cost of purchasing and importing it would probably equal the price of finding and purchasing an 86u, which is my preferred layout.
Even if we can't get some info on the stem spacing, I might track one down anyway. I'd mostly use it with original Cherry dyesubs, and the white/beige Topre color is not too different from Cherry -- so it wouldn't be ferociously ugly if I left the Topre spacebar on the board.
It's incredibly unlikely the spacing will be the same, and that everything will actually work right with Nova stab modules installed. But it's not impossible -- if Topre made a conscious decision to match Cherry spacing (if there is any standard, it would be that, so as unlikely as it is, it's at least possible) then it might work, which would be very cool.