How do you make a 1990 ford thunderbird faster?

I have a 1990 ford thunderbird base model (without super charger) that has a great engine in it. But it only goes has 80 mph on the dash. The odometer was replaced at 57,000 miles and now has 36,000 miles on it, and it is a relatively will maintained machine. I want to make it at least as fast as the average car. Can anyone help?