Hi. Found your old wheel/axle post. I will be in same situation.MK4 Kit isn't here yet but found a donor 03 Mach 1 with all the mechanicals in good shape. Also want to keep the rear axle as is for $ and to retain ABS and TC. My son is set on a staggered look - did you find a 17x10.5 that would fit the rear? What backspace? Now that you have the 9's on, does it look like 10.5's are possible on a stock 03 rear? Thanks, Steve