Few questions for the early A gurus

1. Yes
2. Yes
3. I'm pretty sure
4. Definitely. The only windshield that's different is the convertible.
(4) no difference in windshield just the gasket AND the convertible can also use the hardtop gaket too! I'm using a 2door hardtop windshield in my convertible using a Hardtop gasket.
here is a link showing the difference
63-66 Dart Windshield Gasket Source?