I bought some NOS clear park lenses from Winter Lane at nospartsfromthepast.com . Very easy guy to deal with, couldn't be happier. Prices were fair for how rare the item was. He didn't give them away by any means but they were less than the other one that I found online. Would do business again. He has his parts in inventory online by part number but they are also well described as to application. Type in your car model in the search box and keep hitting enter and it will lead you to all the parts that fit various years and configurations. He shows that he has a couple turbo hood ornaments as well as some chrome trim. He has parts for all gm makes especially 70s-80s era. Think I saw some 60s GS parts in there too. 
bob

bob