The first thing I would do would be have the car put on a frame rack to insure it didn't get bent. The roof is structural to the subframes. It may have tweaked something, it may not. I'd rather know, personally. My '74 Challenger looked very straight when I got it, but I had it racked anyhow. It turned out there was unseen crash damage. When I got it back, the car sat differently and obviously so.