Exterior Decor Package

[jocko]

Several threads on here reference the ZY5 Exterior Décor Package RPO, but most, if not all, seem to be year-specific. Would like to build a more definitive, one-stop shopping thread for those purdy hood stripes, history (i.e. what's the first year, etc), and how the RPO evolved over the years (things like how the hood stripes changed over the years. I know they changed from double to triple between 79 and 80, for example, but would like to document all the variations over the years in a single thread).

Pics highly encouraged, but all knowledge appreciated (Keith, pile in here please)!
I'll get the ball rolling - here are a few nice lookin 1977 Exterior Décor Package examples.