Hi Everyone. Um, oz40, they're shaped differently, they have different shaped lenses with the 36 being much more bulbous. Never tried swapping them but the fenders are not shaped the same either.
If you have the '35/'36 book from the V-8 Club there are a bunch of photos in it.
https://www.earlyfordv8.org/Shop.cfm?id=18&pid=2
If you look at this page you can see a couple of photos, they're not great quality because it's a digital image of the book cover.
Lucky, I have one of each handy so I just went out and took a couple of shots. Black is '35, Blue is '36.