I use two beer crates the same size and park up on a level ish bit of concrete. Put the beer crates at the rear of the front tyres and measure between the two tyre sidewalls. Move the crates and measure at the front of the front tyres . Cut a piece of wood to this rough dimension, it should be tight at the front and need a two or three mill packer for tight on the rear. There should be the slightest bit of toe in which is pigeon toed or at least not the other way round. Some car manufacturers nowadays prefer level with no toe in but older motors need a couple of degrees.