I can speak from experience.... If it doesn't rub on stock suspension it won't when you lower it. Our stock m sport suspension was so soft compared to aftermarket that I was rub a dub dub when I put my VMR v710's on and then I lowered it and viola no more rubbing because it was more stiff in the rear
As for SF-71 their offset is less aggressive so you should be able to lower it without any fender work needed as long as you aren't running larger than 225/255.... Hope that helps and happy lowering!
PS I am running Eibach Pro and Koni Yellow Adjustable on mine for reference.