Made by Japan's Roadster Garage, which we first heard about with the MX-5 / Miata-based Toyota 2000GT speedster and the Nissan 240Z-based Toyota 2000GT Coupe replicas, the car is called the Hakoste.
It combines the body of a Nissan Stagea, commonly referred to as the Skyline wagon, with the front-end of the first-generation Skyline GT-R (1969-1972), the second-gen Skyline GT-R's (1972-1977) body trim and tail lamps, and the RB26DETT 2.6-liter twin-turbocharged inline-six powerplant of the R32-R34 Nissan Skyline GT-Rs.
We don't have any other details on the conversion as the Japanese tuner / builder has yet to publish any information on its official website, but we'll keep you posted if we find anything new.