Questions like this are asked and answered all the time here. There are specific items that are required replacement items when a deployment occurs, and there are some items that are "check only". Check out this website for the EXACT answers to your questions. This site tells you exactly what needs to be replaced (seat belts & all) after a deployment on over 3500 cars.
It's little money well spent to get the correct answers and to see exactly what you're after...it uses pictures, not text, so you can see what you’re looking for.
http://www.airbagsolutions.com
Good Luck...it's not too bad of a job & if your state allows it, used parts or parts from ebay should be ok