Dale, when you say flasher, are you talking about 4-ways?
From what I recall, they do have turn signals, because I distinctly remember driving one and leaving the signal on for a long time, because it doesn't make a noise and let you know.
I'm not going with a third brake light either. If I lived somewhere more busy, I would, but I don't think it will be necessary. If I change my tune later, I can do that.
There are three SP250s very near to me. One is stock and unrestored. Another is lightly modified and one is heavily modernized. I look forward to going on a driving trip to visit all of them and talk with the owners.
And Dale, where the heck are all of your car pictures. I'd like to see them again. I seem to remember bookmarking a link, but then my computer died and I got a new one.
I sent the Purves link to my shop. Sounds good. And you're talking door sills, right? Got of pic of them?