Does the 2000 Ford Mustang have anti lock brakes?

The answer here, "it depends". Some 2000 Ford Mustangs will have anti-lock brakes; it's standard on the GT, but it's an optional upgrade on the base trim. Given Your vehicle's over 20 years old and You're just asking this now, I'm thinking maybe You bought it used --- else You'd know if You paid for that when You bought it. So, the easy way to tell here is... Do You see an ABS light on the dash when You turn on the ignition If so, congratulations, You've got anti-lock brakes. If not, then You almost certainly don't.