67 Dart Windshield

I'm new to the site so forgive me if I should have posted this question on the technical site.
I'm having a problem deciding what to do about installing my windshield.
My car has been painted and the windshield gasket was lost.
1. will a 68 gasket work in my 67?
2. should I buy lock strips?
3. or should I use 68 molding? (I found them and bought them)
4. if I use 68 molding, how do I determine where the clips go?

Thanks in advance for your help