The Custom Trim Option (AKA Deluxe) on the PHS is on different pages. On the ordering card it is the "Color" and "Trim" boxes. That can then be decoded (highlighted by the PHS people) on a page with the exterior colors and seat options.
That Custom Trim Option, if there, includes the custom upholstery (Comfortweave) seats, deluxe steering wheel, deluxe door panels, and some other stuff.
Your deluxe door panels would either indicate yours has the custom trim option or a PO has replaced the originals.
Those seats don't look original. 1st because the upholstery is not original type and 2nd, they have headrests and your PHS does not show the option.
Your deluxe steering wheel looks like it was original. It would have come with a custom trim option or in that Decor Group your PHS shows.
The original dash panel was the burlwood pattern in the '68s. A previous owner has put on a Camaro panel.
You have the center console (code 472) on the PHS so it been removed.
Your PHS shows the optional hood tach but I cannot see it on the hood and a PO has one on the steering column.
Your original Rally 2 wheels have been replaced.
Your PHS shows a 4 speed 400HO. That's a great combo if it has those options. Have you checked the engine for originality since it sounds like that is your goal.
I am not trying to be overly critical, just answering your questions. It's a good-looking '68. Is it a US or Europe built?