FWIW, I have also installed the 15/12 F/R Rogue spacers with the black extended bolts. They're fabulous, lightweight, exceptionally well made, and the sizing makes the profile look just right. Maybe it's just me, but I also sense higher cornering limits on the butt dyno with the spacers. Theoretically I'm right, but the feel could just be in my head.
Never leave a car completely stock!