[wovenweb]

Originally Posted by 68bird400HO

I don't necessarily agree with FGFs conclusion regarding this statement. My '68 convertible is a factory 400HO, auto, non A/C car with standard interior, power windows and tinted glass-all. It was built at Lordstown in June of '68 and I do have the bird glass. Given that when I bought this car it had 36k original miles and was pretty much untouched. It still has its original top and interior and even still had its original deluxe wheel covers on it when I bought it. I am pretty sure my bird glass is original to my car even though it was built so late. Like other have said, there is no rhyme or reason to it. I think a few runs of it were made and the workers at the plant used it until it was gone, maybe judicioulsy or maybe randomly. I have also seen glass on '68 Camaros that has an "Astro Air" (or something like that) etched in the glass in the same spot. It seems GM did this on these camaros and birds with the deletion of the vent windows and inclusion of the new ventilation system in '68.

After getting data on dozens of cars with the glass, there was a general rhyme and reason to it. Is there a 100% guarantee on anything with the these cars, no. Yes your car could have had it direct from the factory but it is the exception. But the lack of cars with it from Lordstown in the intervening time period is an indicator. Similarly, as you don't know the full history of your vehicle(even given the mileage) doesn't mean it wasn't added later.

But to say it was random isn't accurate. Parts are produced at given times for given reasons because it takes work and effort. There is a reason why it is fairly obvious my current 03C Ram Air II head equipped car is a clone for those who know the general history of Ram Air II equipment.