Sharktooth grille on 67-69 valiant? Simple evening job or multi weekend PITA?

So im not an expert on any mopar, haven't owned any yet (im a young guy in Scandinavia so anything american is BIG money here)
But i know i want a 2 door valiant, sedan, post, pillared coupe or whatever you wanna call it which i hear were only made between 67 and 69. (I say 2 door sedan atleast) like most a body guys i REALLY like the sharktooth grille, but im not exactly in the market for a Duster because Dusters are expensive and a bit too cool for my liking. (I have a thing for boxy family cars)

SO, get a 2 door sedan Valiant and put the sharktooth grille on that. How big of a job would that be? 67 and 68 seem to have this middle section with a split grille and a different hood.
But in my head it looks like all you have to do is remove 67-68 hood, grille and the panel under the grille. Replace with sharktooth stuff and viola, frankenvaliant.
On a 69 it LOOKS like the only different part is the grille, and once again, in my head, looks like all you have to do is remove 69 grille, apply sharktooth.

Am i right? Am i in the ballpark even? Or am i completely wrong?

All answers are welcome and appreciated, and i thank you i advance!