Alignment machine will do it no problem. Other than that you can put a little spacer on the axle where the ball joints tie in. Then place a piece of steel between the spacers. Make sure the spacers are the same size. This will kill the measurement if they aren't. Then put the angle finder on it and run. If the pinion is pointed towards the ground, and you don't have enough caster then you will have to break the knuckles loose and redo the caster. I shot for 6-8 degrees when I set mine up, but I don't know what you should aim for. All I know is that I run 35s with no stabilizer at speeds up to and exceding 70 mph. So it isn't the best thing to do, but I am trying to slow down.
