Did you mean Ki-84? Easy to mistype. Excellent aircraft, showing how Japanese designers were willing to change their philosophy based on war experience.
"The Nakajima Ki-87 was a Japanese high-altitude fighter-interceptor of World War II. It was a single seat, exhaust-driven turbo-supercharged engined, low-wing monoplane with a conventional undercarriage." 84 - Frank - Storm. Successful aircraft to be sure... They still couldn't figure out in-line engines though!
I helped build a generator setup similar to that "a few years ago". Timing without electronics was ... fun. I prayed to Lisan al Gaib.