About a week after I got my car, I noticed a tiny little bit of overspray on the rear hatch window, drivers side rear window (whatever its called) and a thing on the rear taillight where it looked like the paint dripped. They are very small and you wouldnt see it unless waxing the car.

And, above the drivers side door (almost on roof), there were these weird looking marks. Looked to be under clear coat. These were removed with the claybar. Guess they were nothing

My first instinct was that the car was repainted. But my father and I examined the undercarriage, and saw no overspray. We looked at bolts around body, looked like none had been removed. Also, the texure of the paint is the same all over the car. Nothing is "different" so to speak. I even have factory orange peel WTF is going on? I know that it is impossible to repaint a big portion of the car with out it being noticeable. There will be overspray SOMEWHERE or slight imperfections you can catch with your eye that wouldnt be in factory paint.

I asked the dealer and they said it was probably overspray from another vehicle. But the overspray was silver. Ironic?

What should I do? I'm getting my front bumper resprayed on the 22nd due to chips. I may have the body shop look at it.

 

See what the shop says. Trained professionals should be able to
tell quickly. Assuming they are trained professionals

Chances are your Z is fine.

I just had a new bumper put on, if you look close on some areas you can tell it's not factory painted. Especially where the side markers are. Actually the paint itself looks better than factory but if you look very very close you can find slight imperfections that wouldnt exist from the factory.
At least in my case this is true.

Hope your going to clear bra your new bumper.
it takes 30 days for the paint to cure before you can do a Clear bra install.
My advice is dont do too much highway driving until you can bra the car. I already have one tiny chip from the drive home from the shop. nothing really but goes to show how quick these bumpers get whacked.

Good Luck