From my interweb wandering, I'm pretty sure you want 500 in-lb + on the focus to try and keep the heavy strut front end under control. One of these days I'll get the money and time to do the whole natural frequency measurement and calculation and make that happen on my focus.
Parking Lot Hero
2008 WRX daily driver
2003 ZX3 23D Autox Car 42 FSP
"Hella Functional - Raced, Not Hard Parked"