67 dart windshield trim/seal?

actually i simply used a 68 and later rear window gasket, put the glass in and bedded the trim peices in black silicone. so far so good, but i'm not sure its advisable with the front. in fact i'm not sure if the trim peices hold the glass in place or are there to just look pretty, but i haven't had any trouble with it so far and i've gone fast enough to test its holding strength. if was going to blow out, i'm sure it would have by now. just food for thought.