Anyone know them? Do they also improve handling? Would GR2's be a good set-up with them?

 

i dont know the exact rates, springs and GR2 are a very good setup. Any lowering springs will help your handling by brining the car closer to the road. So it will imrove your hadling, the gr2 are a very good strut although they are non adjustable, they are given a great rate stock. Good idea. try going to http://www.eibach.com to see if they have the spring rate