This is a slightly different version of the bike above. It looks like they built at least two.
Here's a bit of info I gathered using the Google translator.
K-1 racer replica with aluminum tank:
■Kayaba fork 36Ф Moriwaki
■Aluminum fork Mitsudake
■Brembo front brake
■Lockheed front caliper
■Lockheed Riakyaripa
■13 places the frame reinforcement
■TMR 32Ф Yoshimura carburetors
■Aluminum Oil Tank
■Aluminum Side Cover
■Rear suspension Orleans
■Aluminum Fuel Tank
■NSR250 F / R Magnesium Wheels
■Aluminum Battery BOX
■Bored to 836cc with Wiseco pistons
■Big Valves
■Port Polishing
■Engine O / H
■Oil Cooler 9-inch 10-stage
■Carbon F / R fender