transmission project

[COLOR=#333333][FONT=Aspira]Hi, i have a project where given a 6 speed transmission I need to increase top speed by 10% and acceleration from 0 to 120 mph. I'm given all the gear ratios, max engine speed, wheel and tire size car weight, power and torque curves, along with table showing at which rpms the amount of torque and power.[/FONT][/COLOR]
[COLOR=#333333][FONT=Aspira]FINAL DRIVE CAN'T BE CHANGED, only the other gears.[/FONT][/COLOR]
[COLOR=#333333][FONT=Aspira]Could you post an example(it can be a 4 or 5 speed ) with numbers so I can understand.Thanks[/FONT][/COLOR]