Thanks Henry, your method looks easier, but what I was going to do was simply measure the distance across the outer tread edges on the front at the hub height and then measure the outer tread edge distance across the rear of the tires at hub height, but maybe the frame is in the way of the rear measurement so draping the plumb bob down over the tire to get a tangent point will work even if the frame and engine get in the way of measuring across the rear of the tires. I still wonder even after a home grown "hillbilly" alignment will a regular shop using lasers and modern technology be able to set up the frame with the four-bar setup on front and rear, that is will alignment machines be able to treat the alignment on a four-bar frame setup?

Don Shillady
Retired Scientist/teen rodder