Im putting this FJ 80 front axle together that I bought that was complete up to the spindles. I bought the wheel hubs and brakes off of here and was going to buy Trail Gears Backing plate eliminator kit I found out that they will not work on the FJ 80 only the P/Us. I guess I am going to need to make a spacer so everything seals properly and the bolts fit. Anyone have an idea of how thick the center of the backing plates are?