I torque to 75 lb. ft.
Clifton
I grabbed mine from the local Autozone a while back for something like $35 (I forget the exact ft/lb range...)
Every bit of documentation I've seen so far lists the 3's acceptable lug nut torque range as 67-85 ft/lb
If you don't have one already, I also recommend getting a breaker bar. Beats the snot out of using the tool supplied with the car!