For those that have done lifts on your trucks, when you did the rear springs, the two spacers that are between the axle and the spring pack, is it possible to stack a 3rd block in there? I am going to get a Kore Pace system, so I put some jacks under the truck to lift the front 2 1/2" and the back 1" to see how it looks. I like it MUCH better than stock, but that extra 1/2" in the back would be nice. I'm assuming that the blocks have dimples to index them to the spring pack and to the axle. I'm just wondering if a 3rd will fit without screwing things up. Thanks