The car is going to be lowered after Christmas. I'm getting the STi/SPT suspension kit but using Prodrive springs instead of the pink ones (no drop). Also happening in January is StopTech brakes & Vishnu Stage II... bruhaha
According to the sheet that come with the springs they are Prodrive WRSport 44S/D5/001 Sports Spring Kit. I got them from Irvine Subaru (SPI Motorsports) and their webpage claims that they are the same springs as the UK300.
The springs lowered the car about 1.5" in the front and 0.75" in the rear. Gives it a nice even look with out looking slammed. I'm very happy with them. Highly reccomended!
Prodrive likes to keep thier spring rates "top secret"... but many have said that they are very close to the STi pink springs, which should put them somewhere around 217 lb/in front, 190 lb/in rear.
Here is the link to the springs on the Irvine Subaru/SPI Motorsports website: