Suspension and exhaust problem?

I just got my car back from the body shop and I have a few questions.

- My car pulls slightly to the right and the steering wheel is a little off as well. They said they realigned the car and all was ok. I have not gotten a chance to check the air pressure in the tire. Also the wheels (ssr) took a hit but it was just cosmetic and since they are track wheels I will just leave them looking "mean". The rubber on the wheels are R compound and and have about 8000 miles on them, replacing them in a few weeks. I'm going to put the stock ones on and see if it still pulls. Is there a chance I have something bent in the suspension? The impact to the front of the car was very slight in the accident ( side-swiped a guardrail) front to back. The back end took the majority of the impact.

- The car has been sitting for over 3 months and today when I drove it there was some very thin black colored fluid coming out of the exhaust. Do you think it was just from the car sitting? Or do I have another problem. I tried to smell the stuff but it seems to have little / no odor.

I have some go fast parts I want to install this weekend and want to make sure I'm still ok.

Thanks in advance.