Love the work you're doing. When the car's finished, if anyone starts studying the detail of the exhaust hangers (which look perfectly matched to the period to me, btw) then they've clearly got stuck in one of Freud's developmental stages - in technical language 'a bug up their ar$e.'
99.99% of people are just going to see your car for what it is, a stunning 60's styled coupe that looks like it
could be worth millions.
Good luck sanding the sills.