They have not released a kit for the 2011 yet. I called them on Monday to see what is going on and they said they are still messing with the spring rate.
If they are like the FRPP, it feels perfect. I install my old set of FRPP in the 5.0 and it drop it right were i wanted and the car drive super good in the street. I dont see a new spring been change too much from these i guess.