15x8 Rear Wheel on a stock 65 Barracuda ??

Here's what I did. Jacked up car and took off wheel, then lower jack until axle was even. Then I put a plumb line from the inside of the fender lip, one from the spring and one from the drum face. Then I measured the distances of the 3 plumb lines and had an exact measurement. Do both sides to make sure they're the same. I have 10 inch rims under my '72 Duster with SS springs.