^ agreed on the part that sierra sierra has been testing the car for a very long time.
i was at autoclub speedway.. when they blew a head.. a cosworth head.. and in 2 hrs there was a brand new head on a truck that came in. Eric Hsu of cosworth is always out at the track when the car runs.
off topic.. i still think japanese time attack cars have the advantage over the us ones.. hard to explain it.. but they always come over and basically take out the competition(with relatively less practice then the locals). will be interesting to see how the super lap battle in australia goes. took a couple years for us to take out the hks car.. which wasnt on slicks like the sierra sierra..
but im not taking anything away from the sierra sierra car.. its obviously and awesome car and setup.