I have a question... unless you stop n talk to somebody .. how do you know your racing a stage 3 roush?.. i hear that all the time.. "dude i killed a stage3 blah blah.. they make S/C and N/A roush's... so how can you tell the diff just by riding beside 1? I mean if your car has a turbo... how can u hear a charger whinning? if your spooling?.... just curious