Rockstar has 3 cars
S13 silvia (dais old car)
S13 240sx (dais old car/back up car also driven by ben schwartz)
S15 silva (Dais new car)
The one you saw was probably the S13 Silvia with a new s13 front end... you probably want to hit up there team owner... I forgot his name but he owns the pac rim clothing company.
www.iluvdrifting.com