you shouldn't have to run a narrowed beam. i have 1.5" spacers on mine just to push them out to the edge of the widened fenders, but have TONS of clearance. others run the same width and offset on theirs as well. keep in mind that if you are picking up the pattern because you are converting to Porsche brakes, you will add some track width as well.
here is a shot of them on my car: