67 dart gt the beginning

Use what you have with the car. But I say go 67 because then you don't have to mod all the one of delicates. Such as taillight metal work. These are a few differences I ran into with my 67

Headlight buckets
...already has '69 buckets in the '69 fenders. He has the '69 hood and grille too.

Door latches
Vent windows
...leave'em...no-one will be able to tell