This is the Brill Steel Nissan S14.5 with a fairly unhinged LS3. I noticed this car because it sounds like destruction and it has a claimed 717 horsepower. Now I realize that I missed its best feature: the license plate.
This car is built in Italy (hence the Tricolore on the ironing board of a rear wing) and Italy is known for a slightly lax view about sticking license plates on cars that might not pass muster for street legal elsewhere in the world.
You can see this Nissan's temporary plate waving in the wind, hung between the rear wing supports like some kind of flag.
Italy at its best.