Installing front windshield, '70 Dart tips?

I've installed both using various methods depending on year and the type of gasket. I would suggest you install the rear one first if you've never done one. It's a much tougher glass to break and it will get you used to handling a big slab of glass before you tackle that fragile windshield. Just don't get either one in a bind. They should install smoothly if you have them lubed and use the corrrect method. If you have a helper (recommended), have them follow your directions as if they were just another tool you're using. If you let them do their own thing, you'll probably be working against each other with disasterous results.