Looking around and came across this. It recallibrates your speedo to different gears and tire sizes. Great for those who have different gears or go with different tire/rim size and dont want to buy the expensive 350 dollar reprogramer or pay ford techs to do it.

http://www.dallasmustang.com/screen/speedcal

 

I had seen this but couldn't use it because I have a 01 automatic. I ended up buying a programmer.