You are welcome. The black trim I think was used on the 3rd generation... Is pretty big the spoiler, but help to give in my opinion a nice rear end, I hate the Berlinetta without.
About the front end, I don't remember, I build my Z28 almost 20 years ago... But I remember that I glued one side first, and after the other. Because the body was to narrow and didn't fit the front end shape.