A tuning which included an engine swap.
The car you will see here is one built by Revozport, and it is called simply, Raze. It is being called a 1M, but it’s really just a 1M clone. Not that it really matters, all of the parts that would make it an M seem to have been replaced anyway, including the engine. The powerplant has been replaced with a 4.0-liter twin-turbo V8. It’s tuned to 450 horsepower, and although the engine probably could have handled more, 450 is plenty for this little car.
We can see it here attacking Willow Springs and grabbing the 43rd fastest lap time for the track. Pretty good considering many of the faster times were set by Indy cars.