Never used those. Have you ever reviewed Porterfield’s ? Speaking of reviews has GRM ever done a pad review / test?
You have the Camaro that you could use as the heavy car and I am sure you can scare up a Miata from some place to use as the light car. Some basic 60-0 and 100-0 tests repeated to see how the fade is. Then take them to the track and comment on there "on track" feel / performance / manors.