Difference in 90 and 91 fenders?

I'm in the process of moving inner fenders and radio antenna from wrecked car to good one. Both are 90 GT's. My wrecked car had a bolt in the door jamb holding on my fenders, but my "good" car has no bolt in the door jamb. There's not a bracket to put a bolt in right there. I was just wondering maybe if I have 91 fenders on my 90 GT. You can tell the fenders are not correctly bolted up because there is some minor play in them if you push on the molding.

Thanks, alot. That was the problem. Someone had removed and left the bracket off of the fender.