Just a tip, not sure if its in the thread already, ill post it anyway. If your swapping your seats, make sure the battery is disconnected for at least 1 minute (i'd wait 5 just to be safe) so that the computer doesn't register an air bag fault when you remove the seat belt pretensioner air bag cable from the seat. This is a sensor, but it's just there so it knows if someone is in the seat, it also completes a circuit for the air bags, so if your driving without your seat belt on, the air bag won't go off. the point of this is say if you have no one in your passenger seat, you wouldn't want the passenger side air bags to go off if theres no one sitting there.
There is a lot involved in getting extra air bags to work, really not worth it, but in saying that, if you have passengers often (for example, kids) it might be worth having the extra safety. I've swapped my dash pad over in the past, in doing this i could see the passenger air bag and everything involved, in fact i think i have a picture of it somewhere. It looked like it would be a lot of work to get that put in, but if you have little ones might be worth having the extra safety.
