Here is the live race tracker, it updates in real time... Make sure you select the "GT" at the top of the tracker. It will eliminate the prototype cars and just track the GT class.
The easiest way to track the cars is by the number because the drivers change, here is Camaro5's Grand Am Camaro GT.R's Teams name and Car Numbers
Stevenson Motorsports #57 Camaro GT.R
Autohaus Motorsports #88 Camaro GT.R
Banner Racing #7 Camaro GT.R
Gotta watch that Turner BMW, they are fast... The Magnus Porsche, TGR Porsche and the pair of Speedlab RX-8's are really fast too and top runners this season.