Don't know how I missed this thread from 2017-to present?? I'm guessing the main focus of your question is on the stripe's lower termination?
Link here is a Norwood 03C survivor car... LOTS of photos at --->
https://www.mecum.com/lots/502577/1967-chevrolet-camaro-rs-ss-pace-car-edition-convertible/ . I have LOTS of other photos & links I've accumulated over the years; but can't say for certain whether they're Norwood or LOS cars.
I can say, I have never seen the 'long tailed' header stripe (as illustrated on AIM pg L48/B2) on an original car. Have seen a number of cars (re)painted & striped this way, but none with original paint. I'm not saying there weren't any, just that I've never seen one. There are many here more knowledgeable than I, so if these did exist I'm sure someone will point out the correction.
The Stencils & Stripes stencil kit we used on my car
(in 2013) was engineered to the 'long tail' (AIM) spec. Overall I felt the rest of the kit was very accurate and correctly proportioned. On my car we did not fully utilize the lower extension (long tail) and taped it off where I felt was the proper point. I was very happy with the results (photo).