are they beatable with our 7000+ lb rigs? A buddy of mine just got one and he thinks its the best thing on 4 wheels. I would love to give him a run for his money with a big loud cummins. I know he would smoke me right now, but What would it take? Is it possible? i'm not saying i'm going to go out and spend thousands of dollars just to rub it in his face, but it sure would be fun.