i think it's a Eunos/Mazda Cosmo. the body isn't even a skyline(sorry to wreck it all for ya's). I know the clip says skyline as the title, but the shape look to be a Cosmo. They were very similar to the r32's
Basically, they were released in 1990 with a twin turbo rotary pumping out stock ~300hp. They're also a 3-rotor engine as opposed to the normal 2-rotor seen in the RX7/RX8 etc. Coz of this, you can mod the crap out of them and get some ridiculous results. Friend of mine has one locally and he dyno'd it. 500hp at the wheels with exhaust, turbo tweaking and some engine up grades.
So it's either that or the engine from it! lol