I am currently running OME 861 and 862 springs with 10mm spacers all around. I would like to install an ARB front bumper and want to stay close in height to what I have now. Dont mind if its half inch taller. Wondering if 851s with no packers will net around the same lift with the bumper. My current measurements from center of hub to fender flare is about 21.2 inch on the fronts and about 21.5 inches at rear.