I just bought a 91 Trans Am but when I bought it, it already had a 89 GTA front end. So I decided to make the whole car an 89. I bought the skirts and everything but now I’m trying to put door extensions and the rocker panels and it just doesn’t match. Do I need a different bracket or is it just not possible. I thought it wouldn’t be a problem since the car really didn’t change only the skirts from 89/90 to 91. Can anyone help me out? Thanks