For the love of God-YES! This is awesome. As soon as I get a moment I will crawl under the car and check out the measurements you posted. I think this is exactly what I was looking for. I'll try doing this on Saturday and let everyone one know how beneficial it is. Thanks Aero!
Remember that you'll be measuring center to center on the holes. If you measure between the holes the number will be off the width of the hole.
To get it done easily you can measure from the near side of one hole to the far side of the other hole (assuming they are the same size).
