request they use factory parts only for a new glass. the bodyshop will have a mobil window company install the glass, 99% of the time bodyshops dont intall glass if it requires sealing to seals, a dealership uses the same method for glass installs, in the end its a moblie repair for both. Request the factory glass, it pisses off your insurance company b/c it costs a lot more then aftermarket and they cant say no unless the factory no longer makes it.