it depends on how you drive. i've had them on all my mustangs over the years. the front end "floats" a little at high speeds and fast/sharp turns are not a good idea. if you leave the front swaybar on you will be fine. just take it easy the first few days and get used to the way the car handles. you will really like them when the car hooks, you can feel the front raise up and plant the rear tires at the track. i highly recommend them to any drag racer.