Regarding the overspray, IMO it's really up to who the person is restoring/having the car restored. If he/she a purest at heart, then there might be some overspray, or if they want show quality and crisp lines they might square off the lines.
Frank's car is a great example of how a car can look with overspray and still be outstanding in every detail. If the cars in the SLS were being judged, it would be hard not to chose Frank's car as the "best paint job". Frank's frost green color was outstanding. I never would have bought a car with that color from the factory, but with a paint job like Frank's one wouldn't mind owning one this color. The paint had a very deep look to it. If you saw it in person you would know what I mean. His paint job made my car look like it needed a good buffing. And trust me, I really like for my car to shine when its being shown.
If I lived near Frank, I know who would be painting my cars and buffing when needed, if he would do it. If you want to see an example of detail on Franks car look, at the two finger strips on the driver side cylinder head. It looked like someone removed grease/dust on the flat surface. I was told this would have come from the factory/dealer marked this way. Someone can correct me on this, since I'm only repeating what I was told about the car.
I have a lot of people ask me "would your car have come from the factory looking like this " and my reply, probably not.