This photo is actually of a complete Jim Meyer straight-axle chassis. We couldn't find photos of a bone stock frame, so we used this one to illustrate the measurements taken. SCSS didn't trust any of the measurements from the misaligned frame, so the guys chose a different method. Typically one would establish the wheel alignment and position by the wheelbase of the vehicle in question. In this case, the '55 Chevy had a 115-inch wheelbase. Measuring diagonally from corner to corner in the center of each hub is the typical method for determining where the new wheels and axle will sit.