Well I'm in the USA! Onevias are actually stock. We never got an s13 with a Silvia front. The ka24 comes in them stock over here too, but NA.
As for the current state it's in, I only recently started working on it again and I'm near the end. I have some little things to do and leaks to seal, I'm going bigger injectors after all(740cc) and going to aim for around 260-270whp which is around 350 crank. Should be a fun and nice reliable set up. As far as the 'jdm scene', I guess there's a bunch of different categories of that. This is more styled after the Japanese street style scene(drifting). I absolutely can't stand the Japanese car show nerds. My car looks like a shitbox and theirs being finished look even worse. /rant