I keep looking at how clean this car is! Do you know if it was bought new without the decals? I've seen a few like that, and I believe mine came without them too originally.
Nice car and great story. Is it a Marty by chance? I know there's a few different shades of blue that year and the Marty was a one year only thing. Don't forget to let the folks over at 78ta.com know all about it...They'll go apeshit on it. I have a 77 my self and a 69 GTO so happy it has the 400 also. Have fun and you can't beat the fit of those original GM panels...Lucky dog! Mike