There's no limit on Q's even if redundant. yes you can redrill another hole (across in both vertical walls). definitely do it on a drill press Before you pull it measure how far the leaf eyelet is from the front wall & that'll tell you how much you can move it forward (with a reasonable amt of clearance of course). As you know it'll affect the tire/wheel location in teh wheel well and rear shackle tilt but I'm assuming you have (or will have after redrilling) that covered. EDIT shock lower hole to tapered stud fitment might be slightly more difficult