HaV

What year stang do you have? If you have an SN95 you will need either a speed cal or the gears for your speed sensor to correct the speedo as well. The shop I took it to swore up and down I didnt, that they could change my speedo afterwards.... and after 3 hours on tech support with ford trying to change it in my computer after the install, they gave up and told me I was right.. got a discount on the install because of it though

I love my Ford racing.. the FRPP gears are great.. they do not whine at all. The stock gears were much louder then the 4.10's I just had put in, but I also took it to a shop that does quite a bit of performance related stuff, but mostly on older cars. If they are not shimmed correctly they will whine like a banshee.

stilllearnin

i have a 2000 GT