[GTvert]

I have a 2001 gt convertible with 4:10s,which I love,steeda underdrives,bbk offroad x-pipe,and a hypertech programmer.The programmer was a noticeable difference.I had to get something to fix my speedo,and it fixes it plus tunes your car , changes rev limiter among other things.My tranny had no speedo gear to change like the older ones, and ford could not change the computer.with the above mods on street tires I run around 13.7 in the quarter,I'm convinced I can drop at least a couple tenths off it if i let it cool down since I have a hour and a half drive to the track.Your convert should act about the same as mine.But I highly recommend the 4.10s ,I still get over 20mpg on hwy.