jack it up and have a look, it may show as a slight fattening of the rail, as it was squished a bit. If you think its only out the tiniest bit and you cant see it, then its probably not out. You should be able to see any damage on the rail. If your reo bar at the front is gone you are more likely to have a bit of warping after an accident
if your car is crabbing, check that it had a 4 wheel alignment if its hicas equipped, this is common to a few r32's ive seen. get a lock bar to fix the rear settings permanently or make sure there are no leaks in the system if you want to keep it, as low fluid makes it do wierd things too even at low speeds.