Okay, here's the scoop on the participants:
Extreme Motorsports Supra single T-72 with a 50 shot. (camera car)
Ferrari Berlinetta 355 stock
Viper with mods and Roe supercharger (no nitrous)
'Vette ZO6 with mods and Vortech supercharger (no nitrous)
Supra Single SP-70 (no nitrous)
I'm assuming, with such a low shot (50 shot) in the camera-car, this was probably just used to spool the big turbo at low RPMs, and was probably never used in these runs (again, it's an assumption).
Anyhow, here it is:
Right-click, save as
Races look like they happened in AZ, and there is a local shop by the name of Extreme Motorsports, whom I know the owner of. The logo they used in the video looks a bit different from what I've seen them use, though. Although they do specialize in turbo-apps. I'll try to stop by there sometime this week/weekend, and ask if this is their handiwork.