you could give it a shot.....no guarentee it will work.....if he messed up any of the sensors during the swap (or even possibly a ground) it could take a while to figure out which one.I was just saying that we have 1st gen air bags and they are getting to the age where technically they should be inspected/replaced......but that defeats the purpose of buying a cheap older car.
just be careful not to accidentally deploy one of them if you go to working on them