i have 3.73s in my car, cruisin the highway down to philly to go street racing(hehe) lets see.. with my 245/50/16 street tires at 2000 rpm in 5th gear i am going about 62 mph. keep in mind this is with the not so accurate stock tach. at 90mph my tach is at exactly 3000 rpm... i had my car at 5000rpms in 5th the other night(right before i got pulled over )... anybody know how fast that is?