Using Carbotechs ( 12s in the front and 8s in the back ) and they work killer for the track. The biggest issue with any quality track pad is you are going to see more dust. What I like about the Carbotechs is they work well with the ABS system on the Viper. Their bite does not invade the system earlier , so you will not find it engaging very often. Some pads have huge initial bite with little linear feel and they can engage systems earlier than others. I am a deep braker, so that is something I look to stay away from, but styles are different. Have not found a low dust, really strong pad for track yet, and we have been tracking Snakes at Woodhouse since the mid 90s.
I would call Mark Jorgensen at our Dealership to get his input too, and feel free to contact me if you have any questions on tire pressures, alignments, oil weight for track use, etc.