Does anyone know the solution to finding the whole seal/trim ordeal around the windshield on an H body?

My windshield leaks on the SL, and I'm going to have it replaced, but wanted to find a new and/or good trim to put on it. Or is it universal to pretty much all cars, as in like, the glass company that replaces it will have it?

Rookie question I know, but it's not my field, haha!

Thanks guys!