I entered the even with the Mazda Furai last night. I didn't win, but it's possible with no mistakes.
I should have won Nurburgring and Grand Valley but I messed up.
I had a field comprised of nearly ALL LMP cars, though. While the Furai is super quick, it doesn't have the top end grunt of the other cars. I suppose you could tune it to have more HP. I left mine stock with racing Mediums.
You can get the furai off the miata event in b-spec. I used an '07 miata from the dealer and gave it soft comforts and cheap mods (ecu, air filter, cat converter, and flywheel).