If you're looking for all the paint to match perfectly, like putting the fenders on but spaced, you're probably getting into the over-restored area. The fenders were originally painted hanging from the back rear, so pointed downward. The hoods were painted with the front hooked and hanging. If you ever look at original paint cars, you can actually see where small bits of trash were in the paint and the direction of the paint flow around.
Most folks don't care about this kind of stuff, but since you're asking on a concours forum, worth mentioning. So to answer your question about painting the car like it was originally has more to do with achieving the proper appearance.