VA 67-68 front end parts

[tuddend]

I have a 72 c10 and I wanted to put a 67 grille on it but a number of guys have told me that I'd need the entire front clip to make it work. I haven't had a chance to look at 67 front close enough to see how different the fenders are from the 72, can anybody clear this up for me? And do you know if that 67 front clip lines up well on a 72 cab?

Thanks alot