Getting Wilma to hook up.

I measure from the front flat behind the front tire on the bottom side of the rocker (basically where the fenders bolt on), to the same spot just ahead of the rear tire. The surface it's on needs to be flat and solid. And like '71 says...before the poinion snubber is installed, but after the front end height is set, the pinion angle must be set. Then you can mount the snubber at the right distance from the floor.