I need some information and parts.

I need the passenger side airbag and the driver’s air bag (not there when I bought the car). As near as I can tell the clock spring, the two modules are in tact. ( also need a “Tenax stud” – for the tonneau cover)

The information I need is: 1) How can I test the clockspring assembly? 2) what year air bags will function on my car? (the car is a 2004 Honda s2000. (I understand at a certain point the airbag system became a two stage system and is not compatible with the earlier years)

I just recently acquired the car and I am using it as a daily driver.