I know several team drivers, and they do run STOCK motors. You guys crack me up with the theory of ALL pros run modded motors ALL the time. I know Maifield ran stock Reedy's in Truggy and Buggy at The Futaba Challenge, there was plenty of Crazy engines that were more powerful than his, it was easy to pick out those engines, but he still won both classes....Hmm How can that be???? Driving!!
I am sure the Pros run modded motors for Big Events, but they also run stock mills and most team guys run stock or are testing different configurations for the next generation engines that will be coming out.