67 to 68 Windshield Installation??

Hello.... Thanks to everyone that responded to my original post on converting from a 67 to 68 windshield gasket and trim. Now after receiving a 68 windshield gasket, I have a few more questions...

1) What is the sequence on installation. What I mean is does the gasket go on the windshield first then the car body or vise versa?

2) How is the gasket handled along the bottom? My 67 just has 3 small tabs bent up along the bottom, but it looks like the gasket is designed for a continous edge (like the top and both sides).

Thanks in advance for your help.....