Nice photo.
Have a few suggestions to consider.
The power antenna. Looks like it is a replacement one or the factory one was not down all the way.
Also, no holes in the front bumper for the license plate mounting fasteners.
Tailpipes on the GNX's were painted black at ASC.
I don't see the Turbo Six logo on the headrests????
It may be me, but the offsets on the front and rear wheels don't look quite right, maybe its the angle.
Can the seatbelt hanging on the seatbelt guide be moved so the belt is in the retained position????
For some reason, and it may be the angle, the front air dams look a little square???? If I remember, the corners are more rounded.
I can't make it out, but I don't see the trim around the front window?
Might consider putting a Buick or ASC License plate on the front bumper. (may need to get permission from Buick and ASC to use their logo).
Is this a photochopped picture or a photo of a real car???
Looks great.
Joe