I have a 78 and 81 2WD K5s.
A couple of pics just before I traded my 62 Caddy for the 78.
Unfortuneantly some one installed a sunroof in the removable top which leaked and rusted most of the floor out. She is still waiting her turn in the shop to have the floor fixed and bagged.
I dont have any pics of my 81. It's grey primer with a 3/2 drop and a billet grille. Nothin fancy.