OLD TRAPPER HEMI GTX

I’ve been diggin’ on old photos of this car for years.

Was it a GTX or a RO23 super stock Belvedere II? Did it have a fender tag? What was the original color? How did they decide on the paint scheme. Tell us more.
In the last photo it looks like a bench seat and GTX never had that. It does have the GTX rocker trim and not the upper body trim of the Belvedere II.

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Wasn't the color strip in the grille center GTX only? I'm not up to speed on those cars but that's what I thought anyway. Maybe not. It seems to have that in the grille.