Jack; There's no problem sending your Dart Grille. They're super sturdy and ship well. Just bubblewrap it good. Padding the ends real good is also recommended. If you wanna send your HL Bezels, they will fit perfectly in the middle of the Grille.
I also own a 68 GTS, by the way.
Let me know when you're ready to send and I will shoot you my address via PM.
Thanks.