Yes, the brakes are stock, it's a 74, want to go to big 4-wheel disks, but first things first. As for wheel backspace, the front are 17 x 7 with a 4" backspace, and the back are 18 x 8 with a 4 1/2" backspace. The tires are Falken FK-452, 225-45ZR17 on the front, 245-40ZR18 on the back. They...