I used 2010 ms3 springs they were takeoffs I believe at 6000 miles. The rear swap right in and you have to cut 1 full coil from the front.
Here is torquerules thread I used as my guide.
MS3 spring install 6/2/12
2012 Focus SE hatchback sport, 203a, MTX-75, Candy Blue, Custom 2.5 Exhaust, K&N Typhoon.
Sonic Crew #012 E-123 Omega