I'm pretty sure that H&R sport springs lower your car 1.5" in front and 1" in the rear. Go to turnermotorsports.com- I think thats where you can find the exact #'s.
And as for your question,They will fit depending on your tire size and offset. I just put my 18's on today, and I have tire width 225 up front and 245 in the rear. I am not sure of my offset though, but Tirerack picked my offset for me. Anyway, I am pretty sure that you will have to get your fenders rolled (however like I said, that all depends on your tirewidth/ size, and your offset)