[Walt Fricke]

The windshield glass will generally stay in without the trim (which, as noted, is impossible or nearly so to install with the windshield in the car). Been there. You can find a T shaped rubber trim (Safelite?) which can be installed later, and suffices if you, like me, like the black trim look. And the suggestion that there are other rubber shapes from other purposes which can be pushed into the slot to expand the main rubber piece sound like a good idea also, and if properly dimensioned should work as well as the stock trim. The stock trim is a bear to put in (at least if you don't do this stuff for a living) with the glass on a pair of sawhorses as it is.