OK, I initially read the post as meaning he wanted to buy a 65 Barracuda, but the grille was missing. You are reading it as though he just doesn't like the 65 Barracuda grille and wants to replace it with a 68 or 69 grille. After considering this, I think you are right. Any swap can be done with enough metal working talent or at least the money to buy such talent. But realistically, not a good swap. Just buy a 68 or 69 Barracuda. Even I think the second generation Barracuda is better looking than the first, and I love my 65 Barracuda as much or more than my 67 or 69.