Thanks a lot for the reply!!!

I compared an old weathered 71 cuda grille vs another old 70 grille I have and they look to be very similar....still they are really old sun baked grilles, so I cant tell for sure....

But yes, from what I recall I kinda always thought that the 70 grilles were either a bit lighter gray or maybe as you say got a lil bit more shimmer on them.

...But most people just told me both years are the same shade....

I tried the Rattle Can Dark Argent which is supposed to be correct for the 71 and 70 cuda grille and it is defintely not accurate. Texture is a little less coarse, and its also quite darker than my NOS 71 cuda grille I had to compare with.

However, I took the pressurized paints out of the Rattle can and I mixed it with some synthetic enamel silver paint, and also added some ochre and blue IIRC and I was able to lighten it some to make it match to my NOS 71 Cuda grille and I can say I was pretty happy with the results. I will try and post some pics.