I payed 185.00 for the gears and bearing kit (Motive 4:10) from summit, then got them installed localy for 100.00. I supplied the oil and the friction modifier.
But then again I know a great mechanic, it is rediculous what shops want for the install if you ask me.

 

Wow I almost got *** raped...My guy wants $550 just for installation... I wonder how much Ford would charge???