I like the approach you are using. Seems like you are getting to the heart of the matter. I am wondering if you couldn't fabricate the missing replacement metal.
The fender top AA replacement piece has a really large radius where the rubber strip will go at the joint fender/cowl. That is one reason why I decided not to use it. The other reason was the fold at the door gap (or lack thereof
), but you kept the original in place, so you are good there, good idea!
I was not comfortable working that area, but overall, I am happy with my humble results. I am sure you will be fine.
Good luck and keep on sharing!
...Oh and that 2.7, yes that shine is very motivating!!