What is different on the 67 vs 68 barracuda fastback?

I want the 67 I am looking at to look like a 68.

I know the side marker lights will need to be added, the rear backup lights will need to be deleted, the rear taillights are different and the panel between the rear lights is different.

Will the parts be hard to find to convert it over to look like a 68?

This will be a race car, so it does not have to be perfect on the inside, but would like to know the difference in the dash area?

Anyone out there have the parts necessary they would let go to do this?

Thanks for the help.