There does not appear to be any "camber kit" for the rear. The question is what is "low"? If you go with Eibachs and take the car down an 1" you will have some additional negative camber, but not too bad.
If you go with an H&R and drop it 1.5" or more you will have a very negative camber situation (-3.5 or so) Not good on OEM tires at all.
There was talk about someone making a kit, but I have not seen it.
HTH,
LarryB