Don't do it. I regret lifting my 2008 Imprexa Outback Sport (the one the couldn't decide on a name for..I have heard they just made them up to use part they had for other models..) What good are bigger tires?? I cannot safely drive on the local highway, which is really winding and dangerous on a good day since there are no sway bars. I wouldn't care IF it had helped with the clearance. It didn't. I STILL bottom out every time I try to go up my driveway. i needed clearance!!!! Now, I have no sway bars, no windshield washer reservoir, or fog lights. And, now I want to get rid of it and lifting it has lowered it's value.
I will never buy another Subaru. (For many reasons...) I used to love them.. back in the 80's. I've had 2WD cars that were just as good/bad at dealing with my driveway. With far better mileage.