There are more expensive tools you can buy, but you can make fixtures like this, and get a dial indicator for $20 from Harbor Freight. You get a flat plane of your favorite material, particle board, formica counter top, aluminum plate, and bolt it up like a wheel, with one inch marks on it. The dial indicator is on one end of another board, and a screw opposite it to track the board that's simulating the wheel. Place them about 26" apart, since that's the general size of the original tires that toe settings are based on. The hinge on the bottom is because the wheel moves in and out as it moves up and down, so the hinged board will follow the "wheel." Unload the torsion bar as much as possible, place a jack under the lower control arm, and raise it in one inch increments that you marked on the "wheel." The dial indicator will read directly how much toe change you're getting per inch of travel. To adjust bump steer, you need to raise or lower the pitman arm by shimming the steering box for the driver's side. For the passenger side, you elongate the idler arm mount bolt holes so you can raise or lower it. You then use a washer the size of the mounting bolt, and tack weld it in place to lock in your adjustment.