Dealer Options and Tint/Etching

[pgtr]

AFAIK for 1996 dark tint and VIN etching on the windows were not factory options - correct? (or were all 96s tinted as standard?)

Were they possibly dealer installed GM options? And if so how can you tell vs being done by aftermarket?

Were there any (other) standard dealer options? By standard I mean those options sanctioned by the factory and advertised as available thru Chevy dealers in brochures/advertisements...

thanks