Everybody should go to this link and view the graphing HP calculator.

http://vexer.com/automotive-tools/1-4-mile-ET-HP-MPH-calculator

Put in the weight of the vehicle (4300#?) and move the HP slider until it makes the 118 mph. NOW - move the weight slider down to the weight that most people in race cars race with. (3000#?).... now look at the mph number.