For $100 figured it was a good deal just for the slip plates. . Didn't realize until I unpacked it that those kingpin levels were in there and all the other tools. Big box of shims as well
Well worth it! Instruction cover all the possibilities at the time. Use the FSM for the actual adjustment and specs.
Hopefully the bubble gages mount to the spindles and/or 13" rims. Go see what those cost new from Longacre or similar. Your pretty much all set if you can make a flat setup location.