Well... if you look, you can see the IFMAR marking on the chassis. So I would believe that was the car which raced (and won). Another thing if this is the car that comes on the cardboard boxes (minus some option parts/bling) or has some prototype parts (or specially built) for that race.

Nice car, but didn't awaited for it. Got an IF18-3 and I'll take a look if in local track appears one just to take a look.