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I found a page on Roush's website one day that had all the parts listing of his stock cars but can't find it again.[:@]I will keep looking though. It was very interesting.
You got it. I found just looking around there one day. It is really neat to see what kind of stuff they run. I absolutely love watching NASCAR you a fan?
Really, the gearing all depends on the track. For example, at a short track, they will be running a taller gear for acceleration, but at a superspeedway, the gear won't be as tall so the top speed will be higher.