Well as long as it isn't expanding you may not even need to replace it. Hell I had atleast two cracks on my old Aerostar for a good 3 years. We even kept the vehicle outside during the winter and summer so it was completely exposed. Take it to a glass place..I dunno Henderson Glass or somebody and see what they say. The only class people I've heard of are Henderson and Harmon's or soemthing like that...Good luck!
