Do the 70 series windshields differ between models? HZJ78, KZJ78, LJ73, HZJ73, BJ74 etc. or all the same? Seems like they'd all be the same. In Wyoming, it isn't unusual to need replacement windshields every year or 2 if you are daily driving. Can these be sourced easily enough in the US? through the dealer or aftermarket auto glass? What do you know?