As of the Series 27 update the texture alignment on the top of the 1987 Firebird seems to be off.
Proper alignment is something which I obsess over. I use a grid pattern on all parts of a car when making new designs to ensure the best accuracy possible. I have several saved and shared designs for this car and I feel pretty darn certain they were all spot-on when they were first shared.
These two pictures show how the designs applied to the top of the car have shifted out of alignment. The racing stripes used to align in the back and with the vents on the hood.
The widebody upgrade does not seem to affect the alignment of these textures either way, they are shifted over regardless.
Going by the editor they must be shifted -2.50 to be back in alignment.
This does not seem to affect the “Forza Edition” of this car model.