Opinions on this '68 Barracuda

I'm still waiting on additional pictures from the seller, but in the mean time, I have some questions about the mixed year trim.

If I were to purchase this vehicle, at some point, I would like to return the front and rear end to the correct '68 parts. What parts are needed for the front and rear?

For the front, I know the grills are different, but is the rest of the trim different too? Some one else pointed out that the P L Y M O U T H across the front is from a '67, but is the header different too, or is it just the letter placement?

My main concern is the rear since the '67 reverse lights were separate. Obviously, the tail lights themselves are different (and I assume the bezels as well) and the trim on the trunk, but what about the trunk itself?

Someone mentioned that I would be looking at around $1000 (front and rear to get the correct parts). All said and done, what value do the '67 parts have that I can recoup by selling? I want to use this as a bargaining tool if I decided to negotiate a price on this car.