How hard is it to install the gear for the speedo after i do rear-end gears?

 

Don't... Buy a Dallas Mustang Speedcal... It is more accurate than those cheap speedo gears...

 

get a tunner

 

Very easy...Once you get it up in the air (mine 1996) was on the drivers side towards the top of the tranny follow the wire harness to a plug it's a 5 min. job with only a 9/16 socket and a long extension. gently pry the "C" clip out from the back of the plastic gear with a screw driver and snap the new gear in. Its not completly accurate, it was off by about 4mph i adjusted my speedo needle.

Hope this helps

 

and anyone that has a 1998 or older can't get a tuner because the speedo is mechanical and is no controled by the computer. it sucks